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

Definitions
Team Over Record Over % Under % Total +/-
San Antonio 280-253-11 52.5% 47.5% +0.3
Dallas 326-324-7 50.2% 49.9% +0.9
Memphis 423-424-6 49.9% 50.1% +0.1
Houston 332-356-7 48.3% 51.7% +0.9
New Orleans 411-454-12 47.5% 52.5% +0.1