The current catalogues of historical tables and historical publications contain an inventory of documents representing chronological series extending over several years from past decades. There are also tables with long series (twenty years or more) or much older data from the 20th century. The historical publications include, in particular, many census publications from 2000, 1990 or even from earlier periods. The catalogue also contains an entire series of publications scanned from paper editions dating from the previous century.
A new, more comprehensive presentation of these data is currently underway, aiming to provide an interested audience with a central access to all statistical documents that are no longer considered to be contemporary. A large quantity of historical data can also be found on the website of the Research centre for social and economic history of the University of Zurich.