http://viewer.zmags.com/publication/305110e6#/305110e6/1
Whistleblower, Vol. 20. #2. February 2011
“Dropping the ‘H’-Bomb”
... amicus brief, 2003 SCOTUS case Lawrence v. Texas: … The most widely accepted study of sexual practices in the United States is the National Health and Social Life Survey (NHSLS). The NHSLS found that 2.8% of the male, and 1.4% of the female, population identify themselves as gay, lesbian, or bisexual. See Laumann et al, The Social Organization of Sex: Sexual Practices in the United States (1994) ...
Even if that were true, and I doubt it you do not add the numbers, you average them.