What is every AFC West Division team's record against the over/under line as a road underdog since the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 33-30-0 52.4% 47.6% +2.3
Kansas City 19-19-2 50.0% 50.0% +2.3
Las Vegas 35-40-1 46.7% 53.3% -0.6
Denver 20-28-0 41.7% 58.3% -0.6