It is generally held that approximately 4 to 10% of any population is reportedly gay. The number given varies based on different study methods and the fact not everyone will admit to being gay or bisexual when asked even in completely confidential surveys. This percentage is extremely difficult to pinpoint accurately because there is often much social pressure to hide the fact people are gay by both some survey takers and the people themselves.
Added to that is the "soft" nature of defining "gay" - are we discussing purely 100% gay or lesbian people who have never had a heterosexual experience or including bisexuals across the whole spectrum (a single event, mostly straight, mostly gay)? Are gay people who've never had any sexual experience at all included? Are gay teens included or are they assumed "too immature to be counted"? How are closeted gays included, even if they refuse to say it to anyone? Their refusal to say it doesn't make them not gay.
Depending on how an organization wants the numbers to come out they could fudge the calculations to give you a very low or high result.
Here are some quick calculations on the 40 or so most populous areas. Remember these are just estimates: we're using 7% as an average (halfway between 4 and 10%). This same percentage would apply equally to any city, state, province and even across time. Some places, like bigger metropolitan cities, may have larger numbers of gay people due to migration to a more open locale but the innate population (how many people are born in any place) will generally stay pretty even at about 7% gay.
Figuring a specific "gay men" or "lesbians" percentage would basically just require splitting that 7% in half to 3.5% for each. Some might argue there are fewer lesbians than gay men but that's possibly due to a more difficult social situation for women to come out than an actual lower percentage.
Country || Pop Estimate || 7%World || 6,706,993,152 || 469,489,521 China || 1,330,044,544 || 93,103,118
India || 1,147,995,904 || 80,359,713
European Union || 491,018,683 || 34,371,308
United States || 303,824,640 || 21,267,725
Indonesia || 237,512,352 || 16,625,865
Brazil || 196,342,592 || 13,743,981
Pakistan || 172,800,048 || 12,096,003
Bangladesh || 153,546,896 || 10,748,283
Nigeria || 146,255,312 || 10,237,872
Russia || 140,702,096 || 9,849,147
Japan || 127,288,416 || 8,910,189
Mexico || 109,955,400 || 7,696,878
Philippines || 96,061,680 || 6,724,318
Vietnam || 86,116,560 || 6,028,159
Ethiopia || 82,544,840 || 5,778,139
Germany || 82,369,552 || 5,765,869
Egypt || 81,713,520 || 5,719,946
Turkey || 71,892,808 || 5,032,497
Congo|| 66,514,504 || 4,656,015
Iran || 65,875,224 || 4,611,266
Thailand || 65,493,296 || 4,584,531
United Kingdom || 60,943,912 || 4,266,074
Italy || 58,145,320 || 4,070,172
South Africa || 48,782,756 || 3,414,793
Korea, South || 48,379,392 || 3,386,557
Burma || 47,758,180 || 3,343,073
Ukraine || 45,994,288 || 3,219,600
Colombia || 45,013,672 || 3,150,957
Spain || 40,491,052 || 2,834,374
Argentina || 40,482,000 || 2,833,740
Sudan || 40,218,456 || 2,815,292
Tanzania || 40,213,160 || 2,814,921
Poland || 38,500,696 || 2,695,049
Kenya || 37,953,840 || 2,656,769
Morocco || 34,343,220 || 2,404,025
Algeria || 33,769,668 || 2,363,877
Canada || 33,212,696 || 2,324,889
Afghanistan || 32,738,376 || 2,291,686
Uganda || 31,367,972 || 2,195,758
Nepal || 29,519,114 || 2,066,338
Peru || 29,180,900 || 2,042,663
Switzerland || 7,581,520 || 530,706
(Country populations taken from the CIA World Fact Book based on the 2008 edition. See links list below for source and to look up other countries)
Approximately one tenth of the human population is reportedly gay, which means about one out of every ten people is gay. To get a more accurate answer you'll need to find out what the population of the the country you're interested in is and do the math.
An easier way is to see if there is a local GLBTQ center in your area and ask them if they have any statistics.
Whatever the answer though, you should know that the number you are given will probably be lower than the actual amount of gay people. If you take in to account all of the homosexuals who are secret about it, and especially if you are including bisexuals, there may be a rather significant increase to the amount.
You just have to ignore that being gay isn't against the rules of god and the below paragraph will make sense! Well, no, no one could make a paragraph that dumb logical.
The other could be correct (may be i don't know). But, I can talk confidently of Ethiopia. Let alone 5million, there are not even 5000 gay people in Ethiopia. Ethiopia is a very humble, orthodox country whose people's obey the rule of God.
Don't make fun of gays because they are very nice people until you make fun of them