https://www.huffingtonpost.com/mike-alvear/why-do-gay-men-have-so-li_b_7795648.html

" A few years ago George Mason University teamed up with Online Buddies (the owners of Manhunt and Jack’d) to conduct the largest scientific poll of gay male sex habits. They surveyed 24,787 gay and bisexual men between the ages of 18 and 87 in the US. One of their most shocking findings was that gay men have relatively little penetrative sex. Their survey showed that 35.5% of men engaged in receptive anal sex within the last 30 days. 33.8% of participants engaged in insertive anal intercourse.

There are very few reliable studies on gay sex habits. Other than the George Mason survey, we have to rely on non-scientific but still useful surveys like the ongoing one on about.com showing, with 8,000 respondents, that 29% of gay men “Always” have intercourse when they have sex."