Real quick story.Please don't.
My Brother-in-law is a detective for the sex crimes division of a very large city police department. We were out golfing last year and I asked him how many rapes that he investigates turn out to be false. I figured he would think about it and give me a best guess estimate. But he quickly replied "82%". Yep 82% of the rape allegations he investigates turn out to be provably false. I am guessing that is pretty close to what the average is everywhere. I always knew rape claims were majority false but never would have imagined that high.