Homosexual = 1.75% Lesbian = 1.56% This has been the number that statisticians have been coming up for years. In 1998, I think, some researchers decided to find out where the 10% figure came from and it turns out that it was Alfred Kinsey. What they discovered was that Kinsey had used prison populations for his samples, rather than the general populace, as he had claimed.
I'll leave it to the student to determine the impact of Kinsey's report on American society for the last 50 years. It's disgusting.
Another point on Kinsey was that he listed anyone who had ever engaged in homosexual conduct as a homosexual.