Oh, hold on, I may have gotten my numbers mixed up slightly. 145 might actually be for working, full time pure mathematicians - sorry about that, I'm double checking now.
EDIT: My massive bad, it looks like I accidentally bumped everything up a standard deviation in my head somewhere. Jesus. I should update the numbers in the original post. Maybe I should also consider getting a math PhD after all, apparently I'd be ahead of the pack in that case.