https://www.ncbi.nlm.nih.gov/books/NBK201120/ search for "Evidence for a Decline in Physical and Sexual Abuse"
(searched for that to post this, and they cite %60 since the 1990s).
Freud himself discovered a tremendous amount of horrible abuse in his patients; depending on the culture, most people just turn a blind eye. People that haven't experienced it and recovered from it a bit are really good at not believing how common it is.