In fact, the 2011 study they rely on says this in the abstract:
Estimates of the proportion of men who engaged in same-sex behavior differed by recall period: past year = 2.9% (95%CI, 2.6–3.2); past five years = 3.9% (3.5–4.4); ever = 6.9% (5.1–8.6).Which, of course, indicates that the true percent of gay or bisexual men would likely be around 4 - 5%.
With that background, it was interesting to read this article in the New York Times in which a guy with a PhD in economics looks at the different threads of evidence and agrees with a 5% figure for "men who are predominantly attracted to men".
The most interesting aspect of the article is, however, the evidence he looks at for those parts of America where it seems men are more likely to be "in the closet". (It's centred in the Southern, evangelical States.) I thought this part was an innovative bit of research, and a bit darkly amusing:
The other point that gays rights activists can rely on when talking about the relevance of numbers is this (I only thought to look this up on the weekend):Additional evidence that suggests that many gay men in intolerant states are deeply in the closet comes from a surprising source: the Google searches of married women. It turns out that wives suspect their husbands of being gay rather frequently. In the United States, of all Google searches that begin “Is my husband...,” the most common word to follow is “gay.” “Gay” is 10 percent more common in such searches than the second-place word, “cheating.” It is 8 times more common than “an alcoholic” and 10 times more common than “depressed.”Searches questioning a husband’s sexuality are far more common in the least tolerant states. The states with the highest percentage of women asking this question are South Carolina and Louisiana. In fact, in 21 of the 25 states where this question is most frequently asked, support for gay marriage is lower than the national average.
By 1933, German Jews were largely urban, middle class, prosperous in business, and well represented in the professions (especially medicine and law). They were culturally integrated but represented less than 1 percent of the total population.PS: I still don't support gay marriage, and would prefer it be dealt with by civil unions, perhaps even following the Tasmanian model which allow for other co-dependency relationships to be registered too. But at least I don't argue dishonestly about it.