What is every AFC West Division team's record against the over/under line in division games since the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
Kansas City 35-35-2 50.0% 50.0% +0.7
LA Chargers 31-42-0 42.5% 57.5% -1.4
Las Vegas 30-42-0 41.7% 58.3% -0.9
Denver 28-43-2 39.4% 60.6% -2.6