The date on production index are disseminated on SFSO as a service to the public. There is no internal government access to the data prior to their release to the public. No ministerial commentary is attached to the release of the data. The data are final when first released and are not subject to revision. Major changes in methodology are announced in advance through a news release.
Quarterly bulletin contains results for major groups and subgroups.
Because of this structure, the compilation of monthly indices would be very difficult and time-consuming. Moreover, the indices would not provide representative data or evident results about the business cycle. For these reasons Switzerland is taking a flexibility option for the periodicity and timeliness of the data and will continue to disseminate the production index on a quarterly basis with a timeliness of one quarter.