I just remembered one of Librarything's silly stats. Turns out
71% of the authors I registered there are male.
I don't know what the percentage of male authors in all the literature available today is, but I would guess it is at least 70%, probably more than that, so maybe my reading is a bit biased toward the feminine side compared to this, I don't know. I have been reading quite a lot of romance lately, which is usually written by women.