I did not dive really far into the reports, but youll find them if you google them.
here is something if you research the sources:
You must be registered to see the links
There are also reports from universities from oceania and Europe with the same findings.
But if I was to guess, it might be because people spend more time online today, on IG, twitter etc. With porn a click away. People born in the early 80's didn't have the internet and had to visit shady VHS shops to rent a crappy porn movie, you had to go out and meet people, groping and touching wasnt a hashtag etc. etc. But this is a going off topic by a mile or two
.