Statistics Marriage Divorce

statistics marriage divorce
gay marriage statistics and rates?

i’m doing a project on why gay marriage should be legalized, and i’m looking for statistics on divorce, child abuse, sexual crimes, and any other rates you think i may have forgotten that could be important for both the gay and the straight people. can anyone post them and please, do state your source.
thanks in advance
oh and if anyone can give me details of gay marriage and constitutional rights, that would be great too. ( this has alot of statistics.)
hope these sites help.