Description of Manufacturing production Indices
1. Data Source
Manufacturing production quantity index number is considered to be one of the
important statistical measures used to follow up the development in production
size and trends as well as estimate national accounts indicators at constant prices
in addition to other uses.
Index numbers department in CSO produces quarterly and annual reports on
manufacturing index numbers within a series of indices for all economic activities
taken 2007 as a base year where the first inputs and outputs index has been
calculated since the 70s of the last century.
Data of quarterly questionnaire of manufacturing index number in the large industrial
establishments provided by Directorate of Industrial Statistics were adopted to
calculate inputs and outputs price index number.
2. Methodology
The goods sample ( 199 products) was selected based on the relative importance of the
industrial products excluding products of relative importance approximate to zero. The
sample was divided into 18 categories according to ISIC3 excluding 4 categories due to their
low relative importance, the total value of the selected products formed 95% of the total
manufacturing production value noting that the survey covered 419 large industrial
establishments , 68 of which are public and 351 are private and mixed.
Reference Date: one month
Exceptions Coverage: Kurdistan Region
Questionnaire items: Governorate, name of establishment, number of product
classification, products produced, measure unit, quantity value in dinar, unit price in dinar,
raw material.
3. Concepts and Definitions ( Indicators):
1. Manufacturing Industries: convert raw material to final or intermediate
products.
2. Production quantity: Quantity of goods produced
4. Classifications:
Manufacturing activity is classified based on ISIC3 into 18 categories ( 2-digits)
include industrial products reach to (7-digits) where 4 caregories were
excluded owing to the low relative importance .
Code
15
16
17
18
19
21
22
23
24
25
26
28
29
31
32
34
35
36
Category
Food products and beverages
Tobacco products
Textile
Clothes and fur coloring
Leather, luggage, hand bags, saddles and footwear
Paper and paper products
Printing, publication
Refined petroleum products
Chemical products
Rubber and plastic products
Other non-metallic minerals products
Compound minerals product excluding machinery and equipment
Machinery and equipment n.e.c
Electrical machinery and apparatus n.e.c
Radio, TV and communication equipment
Motor-vehicles, trailer and semi-trailer
Other transport equipment
Furniture and manufactured products n.e.c
5. Method of Calculation
Production value by category in manufacturing taken from the directorate of Industrial
Statistics was adopted in the calculation of the category relative importance ( industry
weight) as follows:
category production value
Category relative importance =
(industry weight)
× 100
Total production value in manufacturing
These weights are used to calculate the general index number of industrial production
quantity , the production value of food products and beverages, refined petroleum products
and non-metallic minerals products industries formed 84% of total production value in
manufacturing while the weight of each product within a category is calculated based on its
relative importance as follows:
Value of product
Weight of industrial product =
× Industry weight
Sum of category production value
These weights are used to calculate the index numbers of production quantity in
manufacturing.
Lasperes formula used the weights of 2007 base year was used to calculate production
index number in manufacturing as follows:
 Q10 W
IQ 
 100
W
Q
Where:
IQ = Index number of industrial production quantity
Q1 = Quantity in the comparison quarter
Q0 = Quantity in the base year 2007
W = Weight
Data Availability
 Data are disseminated at governorates level excluding Kurdistan Region.
 Annual and quarterly reports are produced
 Data are available on CSO web in PDF and Excel format