Figure below shows the wealth share per percentile, top 10 divided by the top 3 percent and the following 7, and bottom 90 percent, since 1989.
As it can be seen the wealth share of the top 3 percent increased from 44.8 percent in 1989 to 54.4 percent in 2013. See the original report here. And yes the top 10 combined have more than 70 percent of all the wealth.
Category: M Vernengo