Today's Buggy Topic
No surprise: it's an effort to answer the above question . . . the buggy reply, fairly lengthy, left at Carpe Diem --- probably the best econ blog on the web when it comes to data-driven posts, all set out in an impressive, easy-to-read set of charts. I strongly recommend visiting it whether or not you're a libertarian --- prof bug himself not.
Here's the link to the original post left by Prof. Mark Perrry of the University of Michigan, who runs Carpe Diem --- and the buggy reply.