What is every Big Ten Conference team's record against the over/under line as an underdog since the 2004-2005 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio State 75-66-1 53.2% 46.8% +1.3
Rutgers 166-148-4 52.9% 47.1% +1.0
Penn State 146-141-1 50.9% 49.1% +1.1
Maryland 91-90-4 50.3% 49.7% +0.8
Michigan 98-98-6 50.0% 50.0% 0.0
Iowa 114-115-3 49.8% 50.2% +1.2
Nebraska 129-134-5 49.0% 50.9% +0.5
Purdue 85-89-0 48.9% 51.1% +1.3
Indiana 100-106-4 48.5% 51.5% +0.2
Northwestern 128-145-6 46.9% 53.1% -0.6
Minnesota 105-128-3 45.1% 54.9% -0.8
Michigan St 49-60-2 45.0% 55.0% -1.7
Illinois 85-115-3 42.5% 57.5% -2.1
Wisconsin 55-78-1 41.3% 58.7% -1.6