THE UNITED REPUBLIC OF TANZANIA
NATIONAL BUREAU OF STATISTICS
In reply please quote:
Our Ref: BD/50/156/01/158
Date: 30 May 2025
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683 41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected]; Website: www.nbs.go.tz (All Official Correspondence should be addressed to the Statistician General)
INDEX OF INDUSTRIAL PRODUCTION (IIP) RELEASE FOR
JANUARY - MARCH 2025
Definition
The Index of Industrial Production (IIP) measures volume changes in the production by
different industrial sectors of an economy. IIP is the index that indicates the
performance of various industrial sectors of the economy. The quarterly IIP shows the
short-term fluctuations in the economy as well as identifying the turning points in
economic development at the earlier stage. Furthermore, it is used in economic policy
making and forecasting future economic performance in the industrial sector.
The volume of industrial production is collected every quarter (Q1: January - March),
(Q2: April - June), (Q3: July - September) and (Q4: October - December).
Scope, Coverage and Classification
The IIP compilation follows the recommended International Standards Industrial
Classification of all economic activities (ISIC) Revision 4 to enhance international
comparison. The ISIC classifies all the economic activities of the economy and uses the
term ‘industry’ in a broad sense to mean any economic activity. However, in the
compilation of IIP the scope covers four broad sectors of the economy as classified in
the International Recommendations for Industrial Statistics of 2008 and International
Recommendations for Index of Industrial Production of 2010. The sectors are mining
and quarrying; manufacturing; electricity, gas, steam and air conditioning supply and
water supply; sewerage, waste management and remediation activities.
Weighting and a Reference Period
The IIP uses industrial weighting approach for aggregating the elementary indices. The
approach focuses on the way industrial production is organized and data is easily
accessible. Weights used in IIP are value added for activities derived from the Annual
Survey of Industrial Production, 2015. The reference period for IIP is the fourth quarter
(October - December) 2018.
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683
41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected];
Website: www.nbs.go.tz
Index Calculation Procedures
Indices are calculated by comparing the volume of production in the current period with
that in reference (base) period. The result at first stage is a set of volume relatives for
the elementary items in the index series. The elementary indices are subsequently
aggregated as weighted averages to obtain the indices at higher levels. The base
weighted Laspeyres index is used for calculation of index series.
Index of Industrial Production Broad Sectors
The overall Index of Industrial Production decreased from 113.9 in the fourth quarter of
2024 to 107.5 in the first quarter of 2025, recording a decrease by 5.7 percentage
change over the period. The decrease is attributed to manufacturing subsector which
decreased by 7.9 percent, followed by mining and quarrying which decreased by 2.9
percent and electricity, gas, steam and air conditioning supply decreased by 1.6
percent, water supply; sewerage, waste management and remediation activities which
decreased by 1.3 percent.
On other hand, long term index recorded an increase from 98.9 in the first quarter of
2024 to 107.5 of first quarter of 2025 recording an increase of 8.6 percentage change.
The increase was attributed to electricity, gas, steam and air conditioning supply
subsector which increased by 22.7percent, followed by water supply; sewerage, waste
management and remediation activities which increased by 22.3 percent and
manufacturing which increased by 7.3 percent.
Chart 1: Quarterly
Indices
of
Industrial
Production
by
Broad
Sector
(2018Q4=100):2018Q4 to 2025Q1
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683
41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected];
Website: www.nbs.go.tz
Index of Industrial Production in Manufacturing Industrial Activity
The index in manufacturing sub -sector when comparing current quarter to the previous
quarter shows a decrease by 7.9 percent from 116.4 of fourth quarter of 2024 to 107.2
of first quarter of 2025. A decrease was attributed to manufacture of tobacco products
which decreased by 30.6 percent, manufacture of fabricated metal products, except
machinery and equipment which decreased by 14.9 percent, other manufacturing which
decreased by 14.8 percent and manufacture of other non -metallic products which
decreased by 13. 2 percent. Whereas, repair and installation of machinery and
equipment increased by 6.4 percent followed by manufacture of textiles which
increased by 4.1 percent manufacture of electrical equipment increased by 2.5 percent.
On the other hand, comparing IIP in manufacturing sub -sector of first quarter of the
current year of 2025 to the corresponding quarter in the previous year of 2024, the
results indicate an increase by 7.3 percent from index of 99.9 in first quarter of 2024 to
107.2 in first quarter of 2025. The increase was attributed to manufacture of beverages
increased by 27.0 percent followed by manufacture of chemical and chemical products
which decreased by 111.0 percent and manufacture of rubber and plastic products
increased by 10.5 percent. However, during the similar period , the index shows a
decrease in manufacture of wood and of products of wood and cork, except furniture;
manufacture of articles of straw and plaiting materials which decreased by 26.9 percent
followed by manufacture of fabricated metal products, except machinery and equipment
which decreased by 13.4 percent and other manufacturing which decreased by 6.3
percent.
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683 41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected]; Website: www.nbs.go.tz
Quarterly Index of Industrial Production by Industrial Activity 2024Q3 (2018Q4 = 100) ISIC Industrial Activity Weight 2024Q 1 2024Q 4 2025Q 1 Percentage change 2024Q 4 VS 2024Q 3 2024Q 4 VS 2023Q 4 B Mining and quarrying 28.8 90.9 97.0 94.2 -2.9 3.7 7 Mining of metal ores 23.8 87.9 98.7 93.5 -5.2 6.4 8 Other mining and quarrying 5.0 104.8 89.0 97.5 9.6 -7.0 C Manufacturing 58.0 99.9 116.4 107.2 -7.9 7.3 10 Manufacture of food products 12.6 92.8 92.7 87.9 -5.2 -5.4 11 Manufacture of beverages 14.5 113.4 155.9 144.0 -7.6 27.0 12 Manufacture of tobacco products 4.8 66.0 100.2 69.5 -30.6 5.2 13 Manufacture of textiles 1.7 90.0 83.8 87.2 4.1 -3.1 15 Manufacture of leather and related products 0.1 98.5 106.3 107.2 0.9 8.9 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials 1.4 98.0 72.3 71.6 -0.9 -26.9 17 Manufacture of paper and paper products 3.3 116.2 115.3 110.3 -4.4 -5.1 18 Printing and reproduction of recorded media 1.4 109.9 101.8 103.5 1.7 -5.8 19 Manufacture of coke and refined petroleum products 0.1 107.3 111.1 112.1 0.9 4.5 20 Manufacture of chemicals and chemical products 2.6 102.5 121.1 113.8 -6.0 11.0 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations 0.4 108.9 116.8 106.6 -8.7 -2.1 22 Manufacture of rubber and plastics products 2.6 97.9 119.0 108.1 -9.1 10.5 23 Manufacture of other non-metallic mineral products 5.6 94.5 114.7 99.6 -13.2 5.4 24 Manufacture of basic metals 3.0 104.7 96.3 97.8 1.5 -6.7 25 Manufacture of fabricated metal products, except machinery and equipment 0.3 110.2 112.2 95.4 -14.9 -13.4 27 Manufacture of electrical equipment 0.5 96.2 99.0 101.4 2.5 5.4 28 Manufacture of machinery and equipment n.e.c. 0.1 106.8 102.3 104.5 2.2 -2.1 29 Manufacture of motor vehicles, trailers and semi-trailers 0.4 102.2 111.7 110.0 -1.5 7.7 31 Manufacture of furniture 2.2 104.6 124.4 120.2 -3.4 15.0 32 Other manufacturing 0.2 102.0 112.1 95.5 -14.8 -6.3 33 Repair and installation of machinery and equipment 0.2 113.4 101.3 107.7 6.4 -5.0 D Electricity, gas, steam and air conditioning supply 11.7 113.3 140.9 138.6 -1.6 22.3 E Water supply; sewerage, waste management and remediation activities 1.5 107.1 133.1 131.4 -1.3 22.7
Overall Index 100.0 98.9 113.9 107.5 -5.7 8.6