I was wondering if anyone out there knows of any sites that would give this specific type of info on Overture/Google adwords. I want to know how much annual spend there is by vertical in these two programs. In other words, I would want a list sorted from most to least, for example, stating Mortgage related sites' Google spend in 2004=1million, Education related sites' Google spend=800,000, etc.

Any info is much appreciated.