This indicator is defined as the change in the level of manufacturer's selling prices in the industry. It is a string indicator of inflation. It reflects the inflationary pressures on the economy from producers (increase of output prices may have no influence on the inflation index, as it can reduce costs in trading). From the total value of the indicator, usually a part is singled out which does not take into account the price of food, alcohol, tobacco and fuel (prices for these commodities are highly volatile). It has a significant impact on the market.