https://www.cia.gov/library/publicat...orld-factbook/
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How often is The World Factbook updated?
Formerly our Web site and the published Factbook were only updated annually. In November 2001, we began more frequent online updating and for many years bi-weekly updates were the norm.
In late 2010 we began to update the online Factbook on a weekly schedule. The CIA discontinued publishing the printed Factbook after the 2007 edition; subsequent annual editions have been published by the US Government Printing Office.