imet133_EN.pdf

except for NAF 33.17Z Repair and maintenance of other transport equipment 33.19Z Repair of other equipment  “Water supply” (Section E) Division 36 Water collection, treatment and supply Division 37 Sewerage; sewage sludge (surveyed as part of the EMB survey but not yet included in the calculation of the IPI) 2.2- From the EAP to the EMBs: Definition of the Boundaries of Monitored Products and EMB Sampling EMB products (known as ‘ProdEMB’) represent an intermediate link between the very detailed list of EAP
products and the level of detail of the IPI series:  an IPI series can consist of one or more EMB products;  an EMB product (ProdEMB) corresponds to one or more EAP products (ProdEAP);  to define the chosen level of detail (the “boundaries” of the products monitored), a general rule is to
track products with widely different business cycles separately. Figure 1: Interlocking Logic Between Products and IPI Series The links between IPI series, EAP products and EMB products are defined at the time of each IPI base year
change or now as part of the annual re-basing of products (see Chapter 3). They are updated each year in line
with changes in the EAP and/or EMB product lists to ensure the homogeneity of the products tracked by a series
over time and thus the quality of the measured changes. Once the list of product boundaries has been defined, a sample 17 is selected for each product monitored from a
sampling frame based mainly on the result of the last EAP available at the time of sampling (year N-2). The
sampling frame includes legal units that carry out an industrial activity and that meet a number of criteria:  the scope criteria referred to in 2.1 (at least 20 employees and/or a turnover of more than EUR 5,000k in at least one industrial activity);  in the event of a secondary manufacturing activity, this must represent a sufficient proportion of the
enterprise’s total turnover; 17The sample for year N is selected in November N-1 and is fixed for the entire data collection year from January to December N. 19

 The sampling frame covers legal units that reported having sold products according to economic models 2 to 5 as part of the EAP18;  the sampling unit is the intersection (product x legal unit). A legal unit may therefore be selected for
several of the goods that it produces; By design, the sample is drawn from the legal units having responded to the EAP and which are therefore
already familiar with the economic and statistical concepts used in the survey (such as the concept of economic
model). The sampling procedures have changed somewhat in recent years. Different selection methods are used depending on the product:  where the number of legal units for a given product is less than or equal to a given threshold S 1 (generally 6 legal units), exhaustive sampling is used;  if the number is between threshold S1 and threshold S2 (where threshold S2 is of the order of 150 to 200), a cut-off (70% in the case of direct surveys, 75% in the case of delegated surveys) is applied (see
below),  when the number is higher than S2, a cut-off at 50% is applied followed by stratified sampling. A number of other criteria have been introduced more recently, such as the need to improve the accuracy with
which certain products of particular importance (given their economic weight) are tracked, resulting in a possible modification of the number of enterprises surveyed according to the size of the sector. 2.3- Direct and Delegated Surveys Excluding food and agriculture, construction and energy, EMBs are overseen by two types of bodies:  “direct” surveys are conducted by INSEE;  “delegated” surveys are conducted by OPAs by decree as part of the conduct of the EMBs. At the end of 2012, INSEE began a major process of standardising surveys for professional bodies. In 2013, 33 monthly branch surveys were delegated to OPAs while 162 surveys were conducted directly by INSEE. The
number of surveys delegated to OPAs has dropped significantly since 2014. Surveys have been standardised in
terms of methodology and questionnaire content. The standardisation process undertaken by INSEE was driven
by the need to revise the IPI processing chain and to apply the framework provided by the European Statistics Code of Practice. The aim was to refocus the content of delegated surveys on products and variables relevant to
the IPI and thereby to minimise the burden on businesses and bring them into line with the principles established
for the design of direct surveys. In 2018, 6 OPAs were appointed by INSEE to conduct EMBs, representing 11 surveys in total. Between 4,500 and 5,000 enterprises are surveyed each month, including 500 to 600 by means of “delegated”
surveys. In the case of surveys conducted by OPAs, INSEE selects the sample and retrieves the detailed results
or the individual data directly. 2.4- The Questionnaire The EMB questionnaire is structured as follows:  the first page is reserved for management and contains the statutory legal notices (including those
implied by the delegation for standardised surveys managed by OPAs), the identification data relating
to the legal unit and the survey correspondent; 18Model 1, corresponding to a purely commercial function, is excluded. 20  the body of the questionnaire contains the survey by products classified according to the classification
in use. Each product is associated with one or more collection variables (e.g. quantities produced or
invoicing excluding purchases for resale19, see Chapter 4). In a small number of sectors, quantities or invoicing may be requested based on an additional breakdown
criterion linked to the economic model (see Figure 2). Figure 2: EMB Questionnaire - Survey of Quantities Produced in Two Possible Forms  by distinguishing the activity of purchasers (M2) from that of manufacturers (M5) (case
limited to NAFs in Divisions 13 covering textiles and 14 covering clothing):  without further distinction (general case), this is the most widespread and simple form: Direct EMB questionnaires are customised, meaning that each enterprise is only requested to respond on the
control products included in the sample and not on its entire output. Each enterprise receives just one questionnaire, which may relate, however, to several branches of activity. The questionnaires of delegated surveys are now almost all standardised. The products and variables and their
design follow the same principles as direct survey questionnaires, with some differences:  page 1 contains the legal notices related to delegation and the union logo instead of the INSEE logo;  the questionnaires are not generally customised but have a fixed structure and enterprises may be
required to respond on products for which they were included in the IPI sample and others that are not
relevant to the calculation of the IPI. Only products of use to the IPI are handed over to INSEE by the
OPAs. The questionnaires may be revised each year to take into account changes in EU product classifications (PRODCOM), enterprise production or IPI methodological changes. In particular, some questions may be removed if they become less useful for the accuracy of the IPI or, conversely, new products may be added.
However, the vast majority of products and variables are maintained from year to year. 19This ensures that any trading activities which by their very nature do not constitute a manufacturing activity are excluded from
the index. In the questionnaires, the exclusion of purchases for resale is indicated by a reference to the economic models to be
reported (see the reference to “M2 to M5”). Enterprises surveyed as part of the EAP are already familiar with the concept of
economic model. 21 Chapter 3 - Choice of Elementary Series 1- What is an Elementary Series? Since it is impossible to monitor the production of all the products in a branch on a monthly basis, product
groupings are defined in advance. These groupings are known as elementary series (or control series) and form
the basis upon which the industrial production index is calculated and analysed. Elementary series correspond to the aggregation of EMB products (“ProdEMB”; see Chapter 2). ProdEMBs are
product codes corresponding to groups of detailed products tracked as part of the annual structural surveys
(“ProdEAP” code from the EAP). Ideally, the elementary series should consist of relatively homogeneous products and be representative of the
branches covered. By design, unless an activity is not monitored, there will be at least one elementary series per
NAF Rev. 2 subclass (5-digit level of the classification). 2- Distribution and Main Characteristics of the Elementary Series with Base Year 2015 2.1- A Little Over 500 Elementary Series Currently, 530 elementary series are used to monitor 232 items of the NAF 700 (58 industry items are not
tracked by a series; see below). The number of elementary series is identical to that of the 2010 base 20 although marginal changes are expected from 2019 with the introduction of the annual re-basing process, which will result in the boundaries of series being revised at a rate of up to a fifth each year (see below). The number of elementary series per NAF subclass varies widely. In cases where the range of products is very
broad, a subclass is generally represented by several elementary series (the chemical industry being one example). Conversely, some items in the NAF 700 can be more easily monitored using a single series. The number of elementary series per NAF also depends on the choice of monitoring variables; within a series, all products (ProdEMB) must be monitored based on a single variable (e. g. quantity in kg) so that the individual
data collected for the series can be summed up. By opting for monitoring based on invoicing, the number of
elementary series can be reduced since it is then easy to sum them up. 20The transition to the 2015 base in March 2018 was accompanied by a number of methodological improvements (such as the
shift to chained indices with annually updated weights) but did not initially lead to changes in the boundaries of series. This is
the purpose of the annual re-basing process launched in conjunction with the 2015 base year, the first wave of which will end in
January 2019. 22 Table 1: Number of Elementary Series by Major NAF Item Number of Elementary Series C1 Manufacture of food products, beverages and tobacco 103 C2 Manufacture of coke and refined petroleum products 1 C3 Electrical and electronic equipment 75 C4 Transport equipment 21 C5 Other manufactured goods 306 DE Mining and quarrying, energy, water 21 FZ Construction 3 Total 530 2.2- Branches Not Monitored in the IPI Some branches are not monitored with the 2015 base year either because of specific difficulties or because of
their limited significance (or non-significance in the case of some NAF items). For example, the mining of coal
and lignite, the mining of metal ores and mining support service activities are not monitored since they account
for a very small proportion of French industrial activity (see Table 2). Other branches within the craft sector (most businesses of which have fewer than 20 employees; see Chapter 2
for details of the inclusion criteria), such as “bakery and bakery confectionery” and “confectionery”, are not
covered. Neither the nuclear industry nor the manufacture of military fighting vehicles are included in the IPI. In other
manufacturing industries, jewellery, the manufacture of musical instruments, sporting goods and toys are not
covered, although their status will be reviewed in the coming years. In the electricity, gas, steam and air conditioning supply branch, there is no series on the manufacture of gas on
account of its small size. Steam and air conditioning supply is not monitored, there being no requirement to do so under the European regulation. The same applies to some branches falling under Section E (“water, sewerage”). In total, non-monitored branches represent less than 10% of the value added of industry as a whole (sections B to E; see Table 2). Some of the activities that are not currently monitored are due to be introduced in the coming
years as part of the annual re-basing process (see below), particularly if they are significant or if survey data
have already been collected (in anticipation of future inclusion) since the last base change. Thus, three branches
that were not previously monitored were already incorporated into the IPI in the March 2019 publication. These
are: “10.71A - Manufacture of bread; manufacture of fresh pastry goods and cakes”, “18.13Z - Pre-press and pre- media services” and “17.29Z - Manufacture of other articles of paper and paperboard”. Other branches may be
introduced in 2020, such as the “manufacture of jewellery and related articles” and the “manufacture of other
products of wood”. 23 Table 2: List of Industry Subclasses Not Tracked in the IPI with Base 2015 (Following the Implementation of the First Wave of Annual Re-Basing in March 2019) NAF Codes Branch Name Estimated weight in Industrial V A in 2016 (in %) 05.10Z Mining of coal 0.00 05.20Z Mining of lignite 0.00 07.10Z Mining of iron ores 0.00 07.21Z Mining of uranium and thorium ores 0.00 07.29Z Mining of other non-ferrous metal ores 0.01 08.91Z Mining of chemical and fertiliser minerals 0.01 08.92Z Extraction of peat 0.00 09.10Z Support activities for petroleum and natural gas extraction 0.02 09.90Z Support activities for other mining and quarrying 0.00 10.13B Meat products 0.13 10.71B Baking of bakery products 0.39 10.71C Bakery and bakery confectionery 1.64 10.71D Confectionery 0.26 10.84Z Manufacture of condiments and seasonings 0.12 11.02B Wine-making 0.37 11.03Z Manufacture of cider and other fruit wines 0.01 11.04Z Manufacture of other non-distilled fermented beverages 0.00 13.94Z Manufacture of cordage, rope, twine and netting 0.01 14.11Z Manufacture of leather clothes 0.01 14.20Z Manufacture of articles of fur 0.01 16.10A Sawmilling and planing of wood, excluding impregnation 0.32 16.10B Impregnation of wood 0.04 16.22Z Manufacture of assembled parquet floors 0.01 16.29Z Manufacture of other products of wood 0.07 18.11Z Printing of newspapers 0.03 18.14Z Binding and related services 0.05 18.20Z Reproduction of recorded media 0.01 19.10Z Manufacture of coke oven products 0.00 20.13A Enrichment and reprocessing of nuclear fuel 0.18 23.43Z Manufacture of ceramic insulators and insulating fittings 0.00 23.44Z Manufacture of other technical ceramic products 0.02 23.49Z Manufacture of other ceramic products 0.00 23.52Z Manufacture of lime and plaster 0.05 23.64Z Manufacture of mortars 0.07 23.65Z Manufacture of fibre cement 0.01 23.69Z Manufacture of other articles of concrete, plaster and cement 0.03 23.70Z Cutting, shaping and finishing of stone 0.11 24.41Z Precious metals production 0.01 24.46Z Processing of nuclear fuel 0.03 26.80Z Manufacture of magnetic and optical media 0.00 28.24Z Manufacture of power-driven hand tools 0.01 28.49Z Manufacture of other machine tools 0.03 30.40Z Manufacture of military fighting vehicles 0.00 30.99Z Manufacture of other transport equipment n.e.c. 0.01 32.11Z Striking of coins 0.00 32.12Z Manufacture of jewellery and related articles 0.20 32.13Z Manufacture of imitation jewellery and related articles 0.05 24 32.20Z Manufacture of musical instruments 0.03 32.30Z Manufacture of sports goods 0.10 32.40Z Manufacture of games and toys 0.05 32.91Z Manufacture of brooms and brushes 0.02 33.17Z Repair and maintenance of other transport equipment 0.07 33.19Z Repair of other equipment 0.05 35.21Z Manufacture of gas 0.00 35.30Z Steam and air conditioning supply 0.46 37.00Z Water collection, treatment and supply 1.71 38.11Z Collection of non-hazardous waste 0.41 38.12Z Collection of hazardous waste 0.08 38.21Z Treatment and disposal of non-hazardous waste 0.38 38.22Z Treatment and disposal of hazardous waste 0.16 38.31Z Dismantling of wrecks 0.03 38.32Z Recovery of sorted materials 0.94 39.00Z Remediation activities and other waste management services 0.19 2.3- The Quality of Subclass Monitoring per NAF Subclass Even if some activities are not monitored, the scope of the elementary series tracked ensures that most of the
subclasses of the activity classification are covered. Within the subclasses monitored, however, not all the
products manufactured (and identified using the list of ProdEAPs included in the subclass) are surveyed. Reasons may include a low cost/benefit ratio (i.e. cost of monitoring versus gain in accuracy) for the IPI,
difficulties in retrieving information on the manufacture of a product on a monthly basis or if the product
accounts for a limited volume of output in the subclass. It is then possible to calculate coverage rates for each branch tracked by the IPI to reflect the representativeness
of the index branch by branch based on data from the annual production survey, which, by design, covers all
products manufactured within a branch. Coverage rates vary according to the branch considered. However, more
than 80% of the branches monitored in industry have a coverage rate of more than 75% (see Table 3a), allowing
for accurate estimates of changes in activity. The coverage rate increased significantly with the implementation
of the first wave of the annual index review process in March 2019 (see below), as illustrated by the difference
with the situation that had prevailed until then (see Table 3b for the coverage rates before the implementation of
these changes). Finally, construction activities are well covered. These coverage rates play no role in the calculation of aggregated indices21. Within a given branch, the process of selecting products is intended to identify products that are representative of other activities in this branch . The underlying assumption is to consider that the uncovered portion of the products is negligible or changes in a
similar manner. 21They have sometimes played a role in the past. To calculate the aggregated indices, VA adjusted by the coverage rate rather
than the total VA of the branches monitored was used. 25 Table 3a: Distribution of Branches (NAF Subclass Level) Based on Current Coverage Level (Excluding Construction) Coverage Rate Number of Branches (Subclasses) Weight of Branches in Industrial V A (%)

90% 149 56.8 75% to 90% 38 21.0 50 to 75% 27 8.5 25 to 50% 10 4.1 Less than 25% 4 0.5 NAFs not monitored or with
no output in France 63 9.0 Total 291 100.0 Table 3b: Distribution of Branches (NAF Subclass Level) based on Coverage Level Before the Introduction of the First Wave of Annual Re-Basing in March 2019 (Excluding Construction) Coverage rate Number of Branches (Subclasses) Weight of Branches in Industrial V A (%) 90% 139 53.8 75% to 90% 36 17.8 50% to 75% 34 12.2 25% to 50% 11 4.8 Less than 25% 5 0.9 NAFs not monitored or with
no output in France 66 10.5 Total 291 100.0 3- Updating the Products Surveyed and the Monitoring Method As explained above, because of structural changes in industry, the list of activities tracked needs to be updated at
regular intervals to ensure the IPI accurately represents French industrial output. Other factors may result in
revisions being made to the tracked series and the method of collection. Examples include a retrospective
statistical analysis showing responses of medium quality and new recommendations issued by international
bodies. Previously, a review of the relevance of the series monitored was carried out every 5 years at the time of
the base change (base years 2005, 2010, etc.). No such review took place at the time of the transition to base year 2015 but will now be conducted on an ongoing basis as part of the annual re-basing process. 3.1- Major Guidelines The UN’s recommendations relating to indices of industrial production focus on elementary series and the choice of production indicators to be used. It is on the basis of these recommendations that work on the re-basing of the
IPI using 2010 as the base year was undertaken. In particular, the UN often recommends (for a well-identified
list of products) monitoring in invoicing terms to better incorporate changes in product quality into the measurement of production. One of the first issues in examining series therefore relates to the choice of monitoring variable. A second issue is the choice of products to be monitored (within a branch in order to provide a satisfactory
estimate of the output of that branch) and the revision of the boundaries of the elementary series, i.e. the list of
products forming it (ProdEMB). Given current developments in French industrial activity, products may disappear, their economic significance may decrease considerably or they may no longer be manufactured in
France. In such cases, it may be appropriate to remove certain monitored products (for example, if the cost seems too high in relation to the expected gain in accuracy of the IPI) or to group series together. These changes
generally lead to a decrease in the branch’s coverage rate. To offset the drop in coverage, it is often necessary to
introduce new products that have become more important. By way of anticipating these developments, some
26 products may be surveyed even if they are not yet included in the IPI (the term used is “future IPIs”), waiting for the time series to be long enough. A third issue concerns the correction of any existing distortions in the boundaries of the elementary series, which may result from changes in classifications or, more rarely, from changes to product classifications . For example, these appear when a product tracked in a given IPI series is classified in a new branch. Though initially intended
to track a set of products belonging to the same branch, the IPI series in question continues to be made up of the
same products, but after the nomenclature is revised (such as the revision that took place in 2008), they correspond to different NAF codes. At the time of re-basing, any series subject to distortion are corrected to
restore the overall consistency between the branch that the series represents and the classification of the products
that make it up. 3.2- Example of Product Review at the Time of the 2010 Re-Basing Apart from the reasons already mentioned, the 2010 base change was an opportunity to optimise the sample of
elementary series and to rebalance the number of series by NAF code. Ideally, the number of elementary series
in each branch should be roughly proportional to its weight, unless the branch has a particularly homogeneous
production (in which case a single product may be sufficient) or a particularly heterogeneous production (i.e.
many sub-branches with very specific production or price trends). To meet the recommendation to develop indicators in terms of deflated values, it is necessary to have series of
industrial producer price indices (PPI) defined along the same lines as the IPI series. To ensure convergence
between the IPI and PPI series, it was sometimes necessary to change the boundaries of the IPI series. In the 2005 base, 592 elementary series were used to monitor production in industry, construction and waste
treatment. In the 2010 base, the number of series was reduced to 520 (see Table 4) while representing, as in the
2005 base, around 80% of total value added. In food and agriculture, new series were introduced to improve the coverage of the IPI. A new branch was added: Processing and preserving of fish, crustaceans and molluscs (1020Z). The processing and preserving of potatoes
(1031Z) and the distilling, rectifying and blending of spirits are better monitored in the 2010 base as a result of
the addition of 3 new series in each of the two branches. Table 4: Breakdown of the Decrease in the Number of Elementary Series between the 2005 and 2010
Bases
Number of series with base year 2005 592

• Series newly introduced in 2010 + 21 – Series discontinued in 2010 – 44 – Series from a grouping (87 series in 2005 grouped into 34 series in

– 53

• Series arising from a splitting (4 series in 2005 split into 8 series in

• 4 = Number of series with base year 2010 (including construction) 520 Since the French textile and clothing industry has decreased significantly in terms of output, the number of
  elementary series within the branch has been adjusted and reduced. The number of series in the chemical
  industry has decreased significantly (from 60 to 37) as a result of the removal of many series relating to the
  manufacture of basic chemicals, fertilisers and nitrogen compounds, basic plastics and synthetic rubber in primary forms, many of which accounted for very little of the branch’s value added. The number of series was
  also reduced in the other branches relating to the manufacture of chemicals, the manufacture of soap and
  detergents, cleaning and polishing preparations, perfumes and toilet preparations and the manufacture of other
  chemical products. In the electricity, gas, steam and air conditioning supply branch, a series on the transport of electricity was
  introduced in the 2010 base with the use of data on high voltage. Data on medium and low voltage feed into the
  trade and supply series. 27 Lastly, the 2010 re-basing was an opportunity to reduce the distortions that had become apparent with the previ - ous base, particularly following the revision of the classification of activities in 2008 22. In total, not all element- ary series were reviewed in depth as part of the 2010 five-year re-basing. A number of lower priority branches
  were not assessed. Similarly, the series relating to branches surveyed by approved professional bodies (OPAs)
  generally underwent no changes. The introduction of annual re-basing is intended to improve this process over
  the long term. 3.3- Introduction of an Annual Series Review Process 3.3.1-Principle Under base year 2015, the industrial branches monitored by the IPI are reviewed at a rate of one fifth of the
  series each year. The annual update process helps to improve responsiveness and to better adapt the monitoring
  of the branches to economic or technical developments. It also ensures that all industrial activities are reviewed
  over a 5-year period, something that was not always possible under the five-year re-basing approach since
  examining all branches at once would have represented too great a burden. The rate at which series are revised
  may be adjusted, as the case may be, to take better account of differentiated changes in the production processes
  of different branches: while the gap between two reviews for the same series will be 5 years on average, it may
  be shortened in some cases. Given the different processes involved in review operations, work on each review wave begins approximately 20
  months before the actual implementation: for example, for the implementation in March 2019 of the first wave
  (dissemination of the January 2019 indices), the initial exploratory work (choice of field in particular) began in
  June 2017. The main objectives pursued, allowing a selection of the branches to be re-based, and the operations
  to be carried out are as follows:  to maximise the coverage of the IPI (value-added share of monitored products in relation to the total
  value added of the branch);  to improve the relevance of the set of elementary series used to calculate the IPI: the point is to
  redefine, within each re-based branch, a set of series adapted to the monitoring of the economic situation of that branch; it may also be desirable to modify the method used to measure production by
  taking into account, as far as possible, the United Nations recommendations applicable to the branch in
  question;  to introduce new industrial products into the monthly surveys (or products not previously monitored on
  a monthly basis) that can be incorporated in a subsequent re-basing into the calculation of the IPI (once
  there is sufficient perspective on the data);  to remove any distortions. 3.3.2-The First Wave (2019) of Annual Re-Basing The first wave conducted between mid-2017 and the end of 2018 involved a revision of 44 NAF subclasses
  (see Table 5 for the exhaustive list), corresponding to approximately 19% of the 2015 value added of
  industry. Overall, these branches were covered by the IPI up to a rate of initially 55%, compared to 75% at
  22The corrections of distortions made as part of the 2010 re-basing concerned the following branches:

• manufacture of arms and ammunition;
• manufacture of air and spacecraft and related machinery, manufacture of electronic components;
• manufacture of loaded electronic boards;
• manufacture of other electronic and electric wires and cables;
• manufacture of electrical installations, manufacture of scientific and technical instruments;
• manufacture of other general-purpose machinery;
• printing machinery, manufacture of electric lighting equipment;
• manufacture of electrical and electronic equipment for motor vehicles;
• manufacture of other parts and accessories for motor vehicles, manufacture of non-domestic cooling and ventilation equipment;
• manufacture of other general-purpose machinery, manufacture of medical, surgical and dental equipment. 28 the end of the review process. During this first wave, nearly 38% of the portion of industry not covered by
  the IPI was addressed. The overall coverage of industry by the IPI thus rose from 77% of the 2015 V A to
  more than 80%. As part of this first wave, 3 branches were included in the IPI monitoring: 1071A - “Manufacture of bread;
  manufacture of fresh pastry goods and cakes”; 1813Z - “Pre-press and pre-media services”; and 1729Z - “Manufacture of other articles of paper and paperboard”. These branches were backcast to provide sufficient
  perspective and are available since 2015 in the data published on the INSEE website. Two other branches were included within the field of the monthly branch surveys (EMBs) from 2019, without being included in the IPI. These are: branch 2364Z - “Manufacture of mortars” and branch 3317Z - “Repair and maintenance of other
  transport equipment”. They will be taken into account in the calculation of the IPI at the time of a subsequent review wave after several years of surveys providing sufficient perspective on the quality of the data. In total, this first stage resulted in nearly 100 elementary series being reviewed. The total number of
  elementary series has changed little despite significant developments, in particular as a result of the incorporation of activities that were monitored without, however, being taken into account in IPI calculations, with a view to future incorporation in order to improve the coverage of the indices (see Table
  5). Table 5: Breakdown of Changes in the Number of Elementary Series with the Implementation of
  the First Wave of the Annual Re-Basing Process (Implemented in March 2019) Number of series with base year 2010 520

• Series newly introduced in 2016 + 20

• Series discontinued in 2016 – 2
• Series from a grouping (25 series grouped into 16 series) – 13
• Series from a splitting (13 series split into 18 series) + 5 Total (including construction) 530 Beyond the changes made to the scope applied and method used to monitor the series, the implementation
  of re-basing requires a major backcasting of the series, the link-up between the old and the new boundaries
  being a sensitive operation for obtaining series of the highest possible quality. In particular, where possible,
  it can be useful to introduce the new boundaries over a sufficient temporal depth (in cases where the
  redefined products were already being monitored in parallel) 23. However, this may lead to significant
  revisions to the revised years. These revisions may be deemed acceptable if the revision of the series allows
  a significant improvement in the quality of monitoring of the branch. The implementation of chained indices since the 2015 base (see following chapters) makes it easier to link
  old and new product boundaries: the switch from the old to the new monitoring method can be managed
  directly using the weights applied to these series (the weight of the old boundary changing to zero at the
  time of the switchover). Table 5: List of NAF Subclasses Reviewed as Part of the First Wave of the New Annual Re- Basing Process (Implemented in March 2019) NAF Code Name of Branch 1020Z Processing and preserving of fish, crustaceans and molluscs 1031Z Processing and preserving of potatoes 1032Z Manufacture of fruit and vegetable juice 23A number of products have been surveyed since the 2010 base year but are not yet included in the IPI (sufficient perspective
  being required). Therefore, when incorporating these products into a review wave, it is possible to produce long series since the
  year of their creation. 29 1039A Other processing and preserving of fruit and vegetables 1071A Industrial manufacture of bread; manufacture of fresh pastry goods and cakes 1071B Baking of bakery products 1071C Bakery and bakery confectionery 1071D Confectionery 1072Z Manufacture of rusks and biscuits; manufacture of preserved pastry goods and cakes 1073Z Manufacture of macaroni, noodles, couscous and similar farinaceous products 1085Z Manufacture of prepared meals and dishes 1101Z Distilling, rectifying and blending of spirits 1102A Manufacture of sparkling wines 1102B Wine-making 1103Z Manufacture of cider and other fruit wines 1104Z Manufacture of other non-distilled fermented beverages 1105Z Manufacture of beer 1106Z Manufacture of malt 1107A Production of mineral water 1107B Production of soft drinks 1623Z Manufacture of other builders’ carpentry and joinery 1729Z Manufacture of other articles of paper and paperboard 1813Z Pre-press and pre-media services 2013A Enrichment and reprocessing of nuclear fuel 2059Z Manufacture of other chemical products n.e.c. 2110Z Manufacture of basic pharmaceutical products 2229A Manufacture of plastic-based technical parts 2319Z Manufacture and processing of other glass, including technical glassware 2364Z Manufacture of mortars 2399Z Manufacture of other non-metallic mineral products n.e.c. 2410Z Manufacture of basic iron and steel and of ferro-alloys 2432Z Cold rolling of narrow strip 2752Z Manufacture of non-electric domestic appliances 2841Z Manufacture of machine-tools for metal work 2849Z Manufacture of other machine tools 2899B Manufacture of other special purpose machinery 2920Z Manufacture of bodies (coachwork) for motor vehicles; manufacture of trailers and semi-trailers 2932Z Manufacture of other parts and accessories for motor vehicles 3311Z Repair of fabricated metal products 3312Z Repair of machinery 3316Z Repair and maintenance of aircraft and spacecraft 3317Z Repair and maintenance of other transport equipment 3320A Installation of metallic, boiler structures and pipes 3320D Installation of electrical equipment, electronic and optical equipment or other equipment 30