Kinsey
Kinsey in 1948 found that 20% of women and 37% of men had some homosexual experience in their lifetime. Kinsey and his colleagues reported that 10% of the males in their sample and 2-6% of the females had been more or less exclusively homosexual in their behavior. (1,3)

Lebanon
There are very few studies that talk about the prevalence of homosexuality in Lebanon. In 1993, Saloum studied a sample of 650 men and women from different Lebanese regions. She found that 5% of the subjects she studied were exclusively homosexual and 18% were bisexual. (4)

The United States
In 1988, a large survey done in the USA by the US bureau of the Census found the prevalence of homosexuality to be 2-3% (2).

In 1994, Seidman and Rieder reviewed the American surveys that addressed sexual behavior. They found that 12%-25% of the American men have had at least one homosexual experience. They found that 1.1%-2.4% of the surveyed subjects were exclusively homosexual. (3)

The latest major study in the USA (as of 1995) was conducted in 1994 on a large representative sample ages 18-59 revealed that 2.8% of men and 1.4% of women reported a homosexual orientation and that 9% of men and 5% of women had at least one homosexual experience after their puberty. (2)

Around the World
A large study was conducted in the 50s and revealed that homosexual behavior of some sort was considered normal and socially acceptable for some members of society in 64% of the 76 non-Western societies that were included in that study. (1,2)

In the early 90s, other studies around the world revealed that the prevalence of exclusive homosexuality ranged from 0.7% in French men and 0.6% in French women to 1% in both Canadian sexes. The prevalence of any lifetime homosexual experience ranged from as low as 2.6% in French females and to as high as 6.1% in British men. (2)

References
1- Ronald Bayer. 1987. Homosexuality and American Psychiatry: The politics of Diagnosis. Princeton University press. Princeton New Jersey.USA.

2- Harold I. Kaplan, MD, Benjamin J. Sadock, MD, Jack A. Grebb, MD. 1994. Kaplan and Sadock's Synopsis of Psychiary Behavioral Sciences Clinical Psychiatry . 7 th edition. William and Wilkins. Baltimore, Maryland, USA.

3- Stuart N. Seidman, MD, Ronald O. Rieder, MD. 1994. A Review of Sexual Behavior in the United States. American Journal of Psychiatry . Vol 151 (3). Pp 330-341

4 -Souhaila Saloum.June 1993. Le Libanais au carrefour des identit�s sexuelles. Psych� , no. 3.