89
Speaking of that, have you guys ever heard of Herbivore Men?
I did some research on Japanese reproductive rates for a college product not too long ago, and thanks to things like ecchi, H, H-games, and most importantly H-merchandise and Virtual Girlfriends, a staggering amount of guys don't even have an interest in sex (and, conversely, quite a few girls have no interest in the guys). There are other reasons as well, but it does play a big part.
I call it the Kirino effect, minus the punching.