I keep track of the books I read, both on Goodreads and in a notebook by my computer. Call it “double booking” (ha ha, ouch, sorry).
In 2010 I read 87 books. I’m including two that I started and read at least a hundred and fifty pages of before setting them down.
24 of these were non-fiction, mostly about social psychology. I think at least ten of these were books that talk about how and why people make decisions.
42 of the fiction books were sci-fi or fantasy. I would have thought it much lower, say around twenty.