How often do girls fap on average?

This subject came up when I was talking with this girl.  I told her like 4 or 5 times a month (I'm serious, I don't really fap that much) but she doesn't believe me as she says even she faps more than that.  Any somewhat credible statistics on how much females fap?

I've been using antiperspirants on my scrotum for the past year because my girlfriend used to complain of the smell.