Australia
2003: The largest and most thorough survey in Australia to date was conducted by telephone interview with 19,307 respondents between the ages of 16 and 59 in 2001/2002. The study found that 97.4% of men identified as heterosexual, 1.6% as gay and 0.9% as bisexual. For women 97.7% identified as heterosexual, 0.8% as gay and 1.4% as bisexual. Nevertheless, 8.6% of men and 15.1% of women reported either feelings of attraction to the same sex or some sexual experience with the same sex. Half the men and two thirds of the women who had same sex sexual experience regarded themselves as heterosexual rather than homosexual.[2]
Canada
1988: A study of 5,514 college and university students under the age of 25 found 1% who were homosexual and 1% who were bisexual. [3]
1998: A stratified random sample of 750 males aged 18 to 27 in Calgary, Canada included questions on sexual activity and orientation. 15.3% of men "reported being homosexual to some degree" on the basis of three (often overlapping) measures of homosexuality: (1) voluntary, same-gender sexual contact from age 12 to 27: 14.0%; (2) overlapping homosexual (5.9%) and/or bisexual (6.1%) self-identification: 11.1%; and (3) exclusive (4.3%) and non-exclusive (4.9%) same-gender sexual relationships in past 6 months: 9.2%.[4]
2003: A survey of 135,000 Canadians found that 1.0% of the respondents identified themselves as homosexual and 0.7% identified themselves as bisexual. About 1.3% of men considered themselves homosexual, about twice the proportion of 0.7% among women. However, 0.9% of women reported being bisexual, slightly higher than the proportion of 0.6% among men. 2.0 % of those in the 18-35 age bracket considered themselves to be either homosexual or bisexual, but the number decreased to 1.9 among 35-44 year olds, and further still to 1.2% in the population aged 45-59. Quebec and British Columbia had higher percentages than the national average at 2.3% and 1.9%, respectively.[5]
Denmark
1992: A random survey found that 2.7% of the 1,373 men who responded to their questionnaire had homosexual experience (intercourse).[6]
France
1992: A study of 20,055 people found that 4.1% of the men and 2.6% of the women had at least one occurrence of intercourse with person of the same sex during their lifetime. [7]
Norway
1988: In a random survey of 6,300 Norwegians, 3.5% of the men and 3% of the women reported that they had had a homosexual experience sometime in their life. [8]
United Kingdom
1992: A study of 8,337 British men found that 6.1% had had "any homosexual experience" and 3.6% had "1+ homosexual partner ever." [9]
United States
1990-1992: The American National Health Interview Survey does household interviews of the civilian non-institutionalized population. The results of three of these surveys, done in 1990-1991 and based on over 9,000 responses each time, found between 2-3% of the people responding said yes to a set of statements which included "You are a man who has had sex with another man at some time since 1977, even one time." [10]
1992: The National Health and Social Life Survey asked 3,432 respondents whether they had any homosexual experience. The findings were 1.3% for women within the past year, and 4.1% since 18 years; for men, 2.7% within the past year, and 4.9% since 18 years;[11]
1993: The Alan Guttmacher Institute found of sexually active men aged 20–39 found that 2.3% had experienced same-sex sexual activity in the last ten years, and 1.1% reported exclusive homosexual contact during that time.[12]
1998: A random survey of 1672 males (number used for analysis) aged 15 to 19. Subjects were asked a number of questions, including questions relating to same-sex activity. This was done using two methods — a pencil and paper method, and via computer, supplemented by a verbal rendition of the questionnaire heard through headphones — which obtained vastly different results. There was a 400% increase in males reporting homosexual activity when the computer-audio system was used: from a 1.5% to 5.5% positive response rate; the homosexual behavior with the greatest reporting difference (800%, adjusted) was to the question "Ever had receptive anal sex with another male": 0.1% to 0.8%.[13]
2003: Smith's 2003 analysis of National Opinion Research Center data[14] states that 4.9% of sexually active American males had had a male sexual partner since age 18, but that "since age 18 less than 1% are [exclusively] gay and 4+% bisexual". In the top twelve urban areas however, the rates are double the national average. Smith adds that "It is generally believed that including adolescent behavior would further increase these rates."The NORC data has been criticised because the original design sampling techniques were not followed, and depended upon direct self report regarding masturbation and same sex behaviors. (For example, the original data in the early 1990s reported that approximately 40% of adult males had never masturbated--a finding inconsistent with some other studies.)
but he's right in that it's abnormal.