If you count lost starts, it is in the 50's.
In our opener I think we only lost 2nd string safety, and our starting LT broke his hand, then things got worse each game since. Just lost 4 for the yr vs dook, but I think we might be okay coming out of GT (though another WR got hurt):
Starting SSDE out for yr
Staring MLB are out for yr.
Starting 3-technique has missed last 2.5 games.
A corner who started 5 gms last yr and two this yr has missed the last few games
O:
Starting RT out for yr
Starting WR out for yr
Starting A-back out for yr
The 2nd string (starting for the guy above) A-back is out for the yr
The 3rd string A-back has missed the last 2 games
2nd String TE (who plays a bunch) out for yr
Starting LT broke his hand in the first game, missed two games then has played the last two with a device
Starting center missed one gm due high ankle sprain
Starting OG Polino is now a backup because his hand is clubbed.
One week before season opener we lost OG who'd been taking first string reps. Early Aug we lost another OG whod' been taking first string reps.
One of the grad xfer OL started fall camp, then quits for two weeks cause he wasn't starting or was out of shape, but came back and now is that starter due to the above.
So based on the opening day depth chart, only 6 starters are lost for the yr, but, but several projected starters were lost in fall camp. Then we generally have a crap-ton of backups who entered fall camp out-for-yr due to spring injuries.