10-15% being gay sounds huge, imo the "closet-gays" arent really gays if they can live "straight" life. Theyre just unsure what they are. Only like 0,5% of my friends are gay, altho this part of Finland tends to be pretty conservative so they dont dare to come into the light.
My sample size is small but still i dont think its true 15% of people are gay. Woa, if thats true it certainly would explain the behaviour of some ppl
E: Well ofcourse if being gay is illegal in their country they cant show it.