"After-tax household income rose 275 percent for the top 1 percent of U.S. households from 1979 to 2007, far above any other segment, a report showed Wednesday. The Congressional Budget Office said the inflation-adjusted, after-tax household income for the rest of the top 20 percent grew by 65 percent over that period. The 60 percent of the population in the middle of the income scale -- the 21st through 80th percentiles -- saw average real after-tax household income rise just under 40 percent.
The bottom 20 percent experienced 18 percent growth."
The bottom 20 percent experienced 18 percent growth."