Plenty of revenue available at the top : Static revenue available by taxing at 1979 rates, by percentiles (in billions of 2013 dollars)

1989 2000 2007 2013
Top 1 percent $60.9 $49.3 $167.5 $22.6
Top 5 percent 76.0 38.5 196.7 37.0
Top 10 percent 82.9 36.5 229.2 64.1

Source: Congressional Budget Office (2016c). The Distribution of Household Income and Federal Taxes, 2013.

View the underlying data on epi.org.