Well, fair enough! But what is this chart, anyway? We were curious. And as it turns out, Pocan was simply trying to find a way to make the staggering growth in U.S. income inequality since the 1970s more comprehensible. According to tax expert David Cay Johnston, if you represent these increases on a line chart, and one inch is equivalent to $59… The top 10 percent would go to 163 feet. The top 1 percent’s line would go to 844 feet. And the top 1 percent of the top 1 percent would go for five miles.