In FOIA’s first years, government agencies reported denying less than 1 percent of all requests in full or in part. … According to data compiled by the Department of Justice, in 2008 almost 22 percent of all requests were denied in part or in full based on an exemption. … Eight years later, that number had risen to 42 percent.

David E Pozen; Michael Schudson, Troubling Transparency- The…, loc. 1125