(Washington Times) Wealthy Americans earn about 50 percent of all income but pay nearly 70 percent of the federal tax burden, according to the latest analysis Tuesday by the Congressional Budget Office — though the agency said the very richest have seen their share of taxes fall the last few years.

CBO looked at 2007 through 2009 and found the bottom 20 percent of American earners paid just three-tenths of a percent of the total tax burden, while the richest 20 percent paid 67.9 percent of taxes.

The top 1 percent, who President Obama has made a target during the presidential campaign, earns 13.4 percent of all pre-tax income, but paid 22.3 percent of taxes in 2009, CBO said. But that share was down 4.4 percentage points from 2007, CBO said in a finding likely to bolster Mr. Obama’s calls for them to pay more by letting the Bush-era tax cuts expire.

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