The world average that is documented (which is likely under reported) is 10/20% which is disconcerting, hope for a future with percentages tending towards 0.
The fuck? So in Europe & US, 10% of people were sexually abused as kids and in Asia it's 20%? Congrats on teaching me the worst fact I've ever learned in my life.
The important fact when it comes to such dark and depressing things is not where we are but where we are headed, it looks the more developed a nation the less abuse on average.
But parents sexually abusing their own biological children is comparatively rare, step parents are about 100 times as likely than parents to be abusive.