Income Inequality in the US (1917-2010)

Atkinson, Piketty and Saez have a new website on income inequality that provides free access to a lot of data. Below a taste, showing the ratio of average income of the bottom 90% to the average income of the top 10% in the US from 1917 to 2010.

It is clear that the war, and the policies enacted during the 1930s, allowed a significant compression of the income of the top, which has been basically reverted in the last 3 decades, after Reagan and the rise of the Conservative movement. Nothing new, but good to see it this clearly.