As a result of a series of tax cuts -- including a growing exploitation of deductions, credits and loopholes -- combined with the economic instability caused by the Great Recession, federal revenue as a share of the U.S. economy has declined to its lowest level in almost half a century, reports the nonpartisan organization, which is dedicated to bringing transparency to the federal budget. After all, when fewer people are employed, fewer people are paying taxes.
But even if the recession hadn't occurred, the federal deficit still would still be sizable, as the National Priorities Project demonstrates in the following infographic:



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