A measure synthetically specifying production effects of industrial enterprises in comparable periods of time (in percentage terms) on a specified level of aggregation according to the current classification of economic activities (e.g. total industry, sections, divisions, groups) and according to voivodships.

Index of industrial production is obtained through comparing the value of sold production in different periods expressed in the same prices (constant prices).

Sold production value is recalculated into constant prices through deflating of production value with the index of price changes, calculated on the basis of the survey on prices of representative products.

As the base period, according to Eurostat guidelines, the year ending with the digit 5 or 0 is assumed.

Calculation of production in constant prices can be done for various price categories. Currently, these are basic prices i.e. prices excluding excise tax, including the value of subsidies on products (goods and services).

• Sold production of industry

• Seasonally adjusted index of sold production of industry