I've been commuting for just over 10 years, roughly 9 miles round trip. I've actually gotten better about biking, for the first few years, I'd say I was more like 75%. Now, it's >90% trips by bike. For the first 8 years, I was on a 12-hours shift schedule, so I commuted 7 out of 14 days. Now, it's 10 out of 14, a normal M-F schedule. Anyway, assuming all that, I have commuted close to 12,000 miles by bike (just commuting miles, doesn't count recreational miles). In that time, I've had 1 accident, which was essentially completely my fault. A car turned in front of me closer than I wanted (not close enough to hit me, but closer than I like). I, very stupidly, gave the driver a one-finger salute with my right hand, while breaking to make a right turn with my left hand. Braked too hard, and went over my handlebars. Put my left hand down to break the fall. Rode the rest of the way home (about a mile), but over the next couple of hours, my elbow started hurting more and more. Went to urgent care, and had a hairline fracture in my elbow.

So, one accident; 10 years; 12000 miles.