There are several problems here. Others later have used the figures innocently. In fact, we don't know what percentage of ours or any other culture is homosexually oriented. Figures tend to be exaggerated by many homophiles because they believe that in numbers there is legitimacy. A significant number of people are criminally inclined, but that does not mean that they are not somehow distorted in their orientation.
Homosexuality occurs in all cultures and has been accepted in many.
This usually is accompanied by the statement or implication that Judeo-Christian culture just happens to be hard on homosexuals. Obviously, we can't review culture by culture here, but let me suggest that you look carefully at the examples given of homosexuality in other cultures. Certainly, homosexual behavior could have occurred in all cultures to varying degrees, but that says nothing about it being normal or natural. In fact, most cultures, including the Greek, up until its final years, classified homosexuality as a crime deserving the severest of penalties. There is evidence that homosexual behavior occurs far less frequently in some cultures than it does in the West.