From an earlier thread, and I never finished the numbers for Purdue or Wisconsin:
Iowa (43 lost- 3 early NFL entrees)/115 offers 35%
Illinois (41 lost- 4 early NFL entrees)/124 offers 30%
Indiana (35 lost- 1 early NFL entry)/108 offers 31.5%
Michigan (40 lost- 0 early NFL entry)/114 offers 35%
Michigan State (28 lost- 2 early NFL entrees)/110 offers 23.5%
Minnesota (45 lost- 0 early NFL entry)/125 36%
Nebraska (28 lost- 0 early NFL entry)/117 24%
Northwestern(9 lost- 0 early NFL entry)/91 10%
Ohio State (23 lost- 1 early NFL entry)/103 22%
Penn State (12 lost- 1 early NFL entry/97 11%
Jon also your 2010 list is missing Austin Gray and Donovan Johnson