I do believe that there are people, families, communities and groups that have very, very low stats and others where it nears 100% (like my chunk of the universe ;) )
Also, like I said before, like knows like. Something about automatic empathy or recognizing the signs or maybe our view of the world is skewed. So while it may seem that you personally know few to no one, I can walk into the same group and find a large number.
That is why some find it hard to believe the stats are so low and others so high :)
There is something about this easy recognition of others that have been abused that is haunting to me. I believe that this is part of the spiritual battle that is going on in this world. I don't even like to talk about it because it sounds like I'm using cliches and I don't want to sound like that. I think that kids who have been abused have their innocence stolen and that uncovers their eyes to things they shouldn't see. That you say you can easily spot others in similar circumstances is really disturbing, but it makes sense to me.
I am speaking as a Christian, past Sunday School teacher, and mother. I know what I would do if I found out someone had done harm to my boys. The body would never be found, and if it was, a few years in prison would be nothing at all to me. It would be worth it to protect my sons and any other kids. After reading your comments, I want just a few minutes alone in a room with your parents, the abusers, and any other enablers responsible for your continued abuse. Just me and them and my trusty aluminum baseball bat.