Report to the President 2004, Information Security Oversight Office, issued to the President on March 31, 2005 and publicly released July 1, 2005 [indicating that 15.6 million documents were classified by the US government in 2004, almost double the number from 2001, leadig to a cost to taxpayers of $7.2 billion]. Excerpt:
This report provides information on the status of the security classification program as required by Executive Order 12958, as amended, "Classified National Security Information." It includes statistics and analysis concerning components of the system, primarily classification, declassification, and the ISOO inspection program. It also contains information with respect to industrial security in the private sector as required by Executive Order 12829, as amended, "National Industrial Security Program."
Read the full text of the report here [PDF]. Reported in JURIST's Paper Chase here.