I haven't, but I don't think it contributes much to the discussion unless you think that marriage just in itself represents success. My parents have never divorced and hence would puff up your statistic, but their marriage isn't happy. Others who did live together before marriage have had far happier marriages. It all depends on the people.
Perhaps they stayed together "for the children." Not being sarcastic. In fact, the stats do indicate that the adult children of parents who stayed together--even when they might have preferred not to--are emotionally and otherwise better off than the children of those who sought greener (and younger and sexier) pastures. But living for others is evidently not your cup of tea. Which is why your marriage, like the marriages of so many people today who shack up to "test the merchandise," will probably not be what a marriage can be--and why your children will no doubt suffer for it.