The income for the bottom quintile rose about 250 percent in the first decade and 285 percent in the second. The second quintile rose only about one-quarter as much, and the middle quintile rose still less. For the fourth quintile, real income increased by less than 16 percent. For the 1987–1996 time period, the top quintile rose even more slowly, increasing by less than 10 percent. The exception was the 25 percent increase for the top quintile for 1996 to 2005, which was greater than for the fourth quintile, but even then, the top 1 percent still posted the smallest increase of all groups.
