"Divorce rate by age at marriage" + the age of marriage as a percentage of all marriages (otherwise you might find 80% of marriages at age 60 are successful but fail to realize that probably accounts for a <1% of all marriages).

I think it's kind of funny that we're all seeking statistics on marriage. Where are the romantics on HN?

Very good point. Finding the second breakdown seems harder.

At any rate, it's still the wrong game to play for the OP.

And presumably you want that for only first marriages.