What is the percent of failed Christian marriages due to sex related issues?

Does anyone know of a survey or any piece of information that shows the failed Christian marriage rate due to sex related issues such as they weren't pleased with their sex life or something to do with pre-marital sex.What is the percent of failed Christian marriages due to sex related issues?I am not sure of the statistics although I have heard that some couples do experience issues due to nerves, etc. However, if you are considering getting married or are experiencing sexual issues within your marriage then I would recommend marriage counselling of some sort which can help you and your partner to enjoy a sexually satisfying romantic life and by God's standards as well!