As a kid I probably read 20+ hours a week, half fiction half non-fiction. I even worked at a library when I was younger.

That dramatically slowed during late high school and university, probably only a few hours of reading a week (other than coursework).

I am back to reading 10+ hours a week, but all non-fiction. I have basically stopped reading fiction. I just have too many books I want to get through to have time for fiction these days.