David Wessel on taxes

David Wessel had a recent piece in the Wall Street Journal (see here) on the issue of taxes - how much and who pays.  As is usually the case with Wessel's writing, he looks at the data.  In the piece he says:

"Over the past three decades, Americans—including most of the rich—have paid less of their incomes to Washington. Top earners have received more of the income and paid more of the taxes; a growing number at the bottom have paid less or, in some cases, nothing."

 The piece has a very informative graph (see below, click to enlarge).