CHART: Average Federal Income Tax Rate by Income Group (1998-2008)

(Click image to enlarge)

Raw Data Source: http://www.editgrid.com/user/soquel_by_the_creek/usa_federal_income_tax_data

See Also ...

• "Is Warren Buffett Paying His 'Fair Share'?"
  http://soquelbythecreek.blogspot.com/2011/08/is-warren-buffet-paying-his-fair-share.html