Let me try to dig that up. It's a little hard to tell as people coming from the print version are indistinguishable from other people just typing in the url, but I can generalize based on the date they came.
I can say off the top of my head that I got about 2x to 3x more emails and calls from people (not too many turned out to be worthwhile) from the print version, which I found to be interesting.