Would you be able to work that out (with a bit of asking the right people) using Sinclair or something similar? I'm sure there is data form Nationals and regional etc events which you could use to estimate what a elite vs part time lifter would be expected to achieve.
That's unless someone has already made what you are looking for!
Stats: 26yrs, 6'1'', 98.0kg
Clean & Jerk: 124kg