Just for fun, I looked up your sources. Here is the first one:
33% of homosexuals ADMIT to minor/adult sex (7).
Who was this generated by? Family Research Institute... Yup, their stated purpose is: "...one overriding mission: to generate empirical research on issues that threaten the traditional family, particularly homosexuality, AIDS, sexual social policy, and drug abuse."
http://en.wikipedia.org/wiki/Family_Research_Institute
The other two are quoted as being from different publications, but don't tell who generated those statistics or how they generated. In any event, considering the first source, I must be skeptical of the others, as well...
Man is a marvelous curiosity … he thinks he is the Creator's pet … he even believes the Creator loves him; has a passion for him; sits up nights to admire him; yes and watch over him and keep him out of trouble. He prays to him and thinks He listens. Isn't it a quaint idea.
-- Mark Twain