What is every Big Ten Conference team's record against the over/under line as an underdog since the 2005-2006 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 91-77-1 54.2% 45.8% +2.0
Michigan 117-105-7 52.7% 47.3% +0.3
Penn St 168-159-3 51.4% 48.6% +1.3
Rutgers 173-168-4 50.7% 49.3% +0.8
Purdue 83-82-0 50.3% 49.7% +1.9
Nebraska 163-163-4 50.0% 50.0% +0.6
Indiana 116-121-5 49.0% 51.1% +0.1
Maryland 112-117-3 48.9% 51.1% +0.1
Minnesota 143-150-4 48.8% 51.2% +0.3
Iowa 124-131-3 48.6% 51.4% +0.4
Michigan St 70-80-3 46.7% 53.3% -0.7
Northwestern 141-170-5 45.3% 54.7% -0.5
Wisconsin 77-93-2 45.3% 54.7% -0.4
Illinois 99-123-3 44.6% 55.4% -1.3