Jay Bookman discusses the implications. A nugget:
When people talk about how much the wealthy pay in taxes, the chart above explains why: They are paying more taxes because they’re making a LOT more money than they used to make. It also helps to explain why the socioeconomic nature of the country has changed so much in the past 30 years. When people say that we’re not the country we used to be, they’re right. We’re not.