The index is based on the monthly production of approximately 17,000 business representative firms with 20 or more employees, and the data are classified at the 4-digit level of WZ 93. For manufacturing branches, the weights used in the index are based on the base year net output values. Original, working day and seasonally adjusted data are published. During the sixth week after the end of the reference month.
Individual data are confidential.
The indices calculated by the Federal Statistical Office are delivered as original values and values adjusted by work day to the Federal Ministry of Finance and the Bundesbank. The seasonally adjusted results are prepared by the Bundesbank from these data and delivered to the Federal Ministry of Finance. The data are then released by the Federal Ministry of Finance. There are no officials outside the Federal Ministry of Finance and the Bundesbank, who have access to the data prior to first release to the public. The current indices are published by the Federal Ministry of Finance together with an annotated press release.