15 () posted 1 year ago by GynaNumbaZero 1 year ago by GynaNumbaZero +16 / -1 14 comments share 14 comments share save hide report block hide replies
It's since the 90s. So likely has a lot to do with cell phones.
I'm not 100% sure what you mean. But I'm also too lazy to dive into the data on that paper to answer you even if I did.
I did glance at the charts but I don't see much standing out.