Sorry, I meant to say “...do you have a SOURCE I can use as a reference?”
I've always heard the stat that 5% of the adult population is "gay". 200,000,000 X .05 = 10,000,000. Half are women? Leaving 5 million gay men (roughly). I would say 1:5 ratio is about right. Pretty damn high.
Study: 1 in 5 urban gay and bisexual men got HIV - AP
1 in 5 Gay/Bi Men Have HIV, Nearly Half Don't Know - WebMD
This was a CDC study.