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

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 58-60-2 49.2% 50.9% +0.9
Las Vegas 105-110-6 48.8% 51.2% +0.5
Kansas City 61-65-5 48.4% 51.6% +0.4
Denver 63-72-2 46.7% 53.3% +0.5