Such continuous revisions are carried out routinely to integrate newly available statistical information. For this revision, that was especially the results of structural business surveys and of turnover tax statistics, both for reference year 2005.
Such regular corrections are due to the nature of the calculations: In order to publish current data as early as possible, the results are calculated on an incomplete data basis and some of them are estimated.
Only after about four years, that is when nearly all basic statistics required are completely available, are the national accounting data considered “final” (in this case, that is the data for 2003), provided that no large-scale conceptual revisions are carried out.
The recalculations resulted in rates of GDP change which differ from the previously published results by up to 0.1 percentage points for the annual results, by up to 0.2 percentage points for the seasonally and calendar adjusted quarterly results and by up to 0.4 percentage points for the year-on-year quarterly results (unadjusted figures). Among other things, the result for 2006 was corrected upwards by 0.1 percentage points to 2.9%.