The information in this system is based on the Central Statistical Office's full and complete data derived from the following statements:

• F-01 - a current economic and financial report,
• F-02 / SP - balance sheet and profit/loss statement,

The information in this system is updated five times a year and dates back to 1990 (with the exception of 1990 and 1991 when only annual data are available):

• on the basis of the F-01 statement on a quarterly basis,
• on the basis of the F-02 / SP statement on an annual basis.