Income inequality

There's some excellent tax data buried in Did federal government policy create the Great Divergence? (5) - By Timothy Noah - Slate Magazine. The bits I think I can use:

In 1979, the effective tax rate on the top 0.01 percent (i.e., rich people) was 42.9 percent, according to the Congressional Budget Office. By Reagan's last year in office it was 32.2 percent. From 1989 to 2005 (the last year for which data are available), as income inequality continued to climb, the effective tax rate on the top 0.01 percent largely held steady; in most years it remained in the low 30s, surging to 41 during Clinton's first term but falling back during his second, where it remained. The change in the effective tax rate on the bottom 20 percent (i.e., poor and lower-middle-class people) was much more dramatic, but not in a direction that would increase income inequality. Under Clinton, it dropped from 8 percent (about where it had stood since 1979) to 6.4 percent. Under George W. Bush, it fell to 4.3 percent.