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 285-255-11 52.8% 47.2% +0.4
Dallas 328-329-7 49.9% 50.1% +0.7
Memphis 426-430-6 49.8% 50.2% +0.1
Houston 338-356-7 48.7% 51.3% +1.0
New Orleans 413-461-12 47.3% 52.8% 0.0