I found an excellent page here:
http://www.geocraft.com/WVFossils/greenhouse_data.html
The upshot is, when you take into account the highest contributor to the greenhouse effect, water vapor, the total man-made contribution to the greenhouse effect is 0.28%.
Of that, greenhouse effect contribution due to man-made CO2 is .117%.
IT’S NOT ABOUT GLOBAL WARMING FOLKS.
It never has been. It has always been about control (and, of course, Al Gore making lots and lots of cash).
You can cite as many statistics as you like, it won't matter because GW is a religion; and, no amount of actual facts or science will get in the way of their belief system.