WHY DON'T OFFENSIVE LINEMEN HAVE REAL STATS?

OFFENSIVE LINEMEN SHOULD HAVE EFFICIENCY RATING STATS BASED ON RUN & PASS BLOCKING ABILITY THROUGHOUT THE ENTIRE SEASON NOT JUST FILM GRADES. THESE RATINGS SHOULD BE A STATISTICAL CATEGORY ACCESSIBLE TO THE FANS LIKE OTHER POSITIONS' STATS. OFFENSIVE LINEMEN'S EFFICIENCY RATINGS SHOULD BEGIN IN COLLEGE AND CONTINUING INTO THE NFL/CFL.