Historical Tax Rates

I was curious what the top marginal tax rates have been for the last century.  As you can see the last time we had rates this low it preceded the Great Depression.

There is a lot of interesting information on that tax policy website, unfortunately it could be organized quite a bit better.  The Times has an article by Paul Krugman explaining that corporation have ample cash right now, but the problem is a lack of consumers.  You can't trickle down to a not existent middle class.