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Step 2: Calculating production index of VSIC 4-digit classes
The production index at 4-digit class of VSIC industry is the

weighted average index of indexes of items representing for such VSIC 4-
digit classes.

Formula:
 i  W
qn
I qN4   W qn qn

Where:

I qN4: Production index for the N-th class of the VSIC 4-digit class.

I qn: Production index for the n-th item in the VSIC 4-digit class.
W qn: Weight of the item n. Weight of item is the value at basic price
of the item in the base year 2015.
Step 3: Calculating production index of VSIC 2-digit divisions

The production index at 2-digit division of VSIC industry is the
weighted average index of the production indices of VSIC 4-digit classes

under the VSIC 2-digit divisions.
Formula:

 I  W
I  qN4 qN4
qN2  W qN4

Where:
I qN2: Production index of the VSIC 2-digit divisions.

I qN4: Production index of the VSIC 4-digit classes.
W qN4: Weight of the VSIC 4-digit divisions. Weight of the VSIC 4-
digit divisions is the value added at current price of the base
year 2015.
Step 4: Calculating production index of VSIC 1-digit sector

The production index at 1-digit sector of VSIC industry is the
weighted average index of the production indices of VSIC 2-digit divisions
under the VSIC 1-digit sectors.

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