Quarterly dynamics of enterprises' activity show dynamics changes in financial business activities of enterprises and changes in structure of economic activities in the section of non-financial business economy. Financial activities of enterprises are based on the data on operating income, operating costs and stocks. The data obtained from the Quarterly structural survey are primarily used for calculation of macroeconomic aggregates, and for calculation of quarterly turnover indices in service activities. Since the goal of the survey relates to monitoring the dynamics of financial results of enterprise's activity, created are relevant indices on quarterly (current quarter/ previous quarter) and annual level (current quarter / same quarter of the previous year).