Being exponential, reinvestment wealth grew exponentially—like compound interest. In the United States, in 1976 the top 1 percent had 19.9 percent of the wealth. In 2010, the top 1 percent had 35.4 percent of the wealth. In 2010, the top 5 percent had 63 percent of the wealth; and the top 20 percent had 88.9 percent of the wealth. That left the bottom 80 percent with 11.1 percent of the wealth.
