Mass to Orbit stats?

I'm curious if there is any way to calculate up mass to orbit per launch.  
I would be very entertained watching mass to orbit count up during the year, and especially per booster.
F9 is quite a bit smaller than Saturn V sure...but at some point the actual delivered mass to orbit by a single booster will get there.  ... won't get it to the moon...but it will still be an interesting milestone.