What is every Southwest Division team's record against the over/under line in division games? Includes the 2019-2020 season plus historical records.

Definitions
Team Over Record Over % Under % Total +/-
Dallas 8-6-0 57.1% 42.9% +5.7
Houston 7-6-0 53.8% 46.2% +7.3
Memphis 6-7-0 46.2% 53.8% +2.0
New Orleans 6-7-0 46.2% 53.8% -3.2
San Antonio 5-8-0 38.5% 61.5% -1.0