Beaten to the punch:

it is:

54% E145
18% CRJ 700
10% CRJ 900
14% EMB 170/175
2% B737
6% M88

Now that's by departure, and we don't get paid by departure but by block hour. I haven't done the analysis for that, but the 1 737 leg to DEN and back sure pays more than a LGA-PHL-LGA flight. The kid is sick today, so don't know if I can get it done, but the block hour is more accurate way to compare. I'm sure that DCI will still be a high percentage than mainline tho.