Upon the collection of additional information or changes in methodology, the data of previous periods are revised as follows:

 

• Regular revision – if the data released on specific dates according to the Advance Release Calendar is preliminary, then it is revised upon the release of the statistics of the next period.

 

• Extraordinary revision – in exceptional cases, when significant errors and omissions have occurred or methodology changes render results incomparable, data can be adjusted retrospectively for more than a year. In such instances, the public will be notified by a corresponding note.