An earlier version of this story incorrectly stated that FOIA requests cost the federal government more than $461 billion last year, and $392 billion in 2009. The correct figures are $461 million and $392 million, respectively.
The backlog of Freedom of Information Act requests grew for the second straight year. But the 70 percent spike in unprocessed FOIA requests easily dwarfs any year-to-year increase over the last half decade.
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