What is every AFC West Division team's record against the over/under line as an underdog since the 2004 season?

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 64-64-2 50.0% 50.0% +1.0
Kansas City 66-66-5 50.0% 50.0% +0.9
Las Vegas 111-114-6 49.3% 50.7% +0.4
Denver 65-73-2 47.1% 52.9% +0.6