The hardest part about talking about divorce rates is that most of the reports in the news are wrong….(see comments here about this).
After the eternal bliss, there are two ways out of marriage: divorce or death.
I have posted my code and calculations for divorce rates using the 2010-2012 American Community Survey as an Open Science Framework project. The files there should be enough to get you started if you want to make multiple-decrement life tables for divorce or other things.