from 15 Statistics That Destroy Liberal Narratives by John Hawkins in Townhall:

It’s also not true, as widely asserted, that the wealthiest Americans (the notorious top 1 percent) have captured all the gains in productivity and living standards of recent decades. The Congressional Budget Office examined income trends for the past three decades. It found sizable gains for all income groups. True, the top 1 percent outdid everyone. From 1980 to 2010, their inflation-adjusted pretax incomes grew a spectacular 190 percent, almost a tripling. But for the poorest fifth of Americans, pretax incomes for these years rose 44 percent. Gains were 31 percent for the second poorest, 29 percent for the middle fifth, 38 percent for the next fifth and 83 percent for the richest fifth, including the top 1 percent. Because our system redistributes income from top to bottom, after-tax gains were larger: 53 percent for the poorest fifth; 41 percent for the second; 41 percent for the middle-fifth; 49 percent for the fourth; and 90 percent for richest. — Robert Samuelson