The Queers of New York by Leo Orenstein

The whole thing reads a lot like an interview with a sexologist, circa 1970.
'Are there any figures on what percentage of the population is homosexual?'
'I think Kinsey provides the most reliable figures so far, on that. At least judging from my work here at the clinic, I have no reason to doubt them. The picture that shapes up in these studies shows that 4% are exclusively homosexual, and another 33% have been involved in at least one enjoyable homosexual experience in their lives.'
'Thirty-seven percent altogether? That's more than one out of three!'
'Yes, and that's to the point of orgasm. Mind you, I think Kinsey was a bit too wide on the 33% because he takes it from adolescents on; but altogether its generally assumed that 37% of the male population has at one time in their lives become involved with a male homosexual.'
~ The Dusty Bookcase