You need to cite your source and link it, simply spouting off numbers isn’t gonna fly here.
Here is a couple when I googled cohabiation and divorce rates(see below) . Obviously not everybody who lives together before will get a divorce and whose who don’t live together before marraige will not divorce.. However, stattistically speaking, your chances are greater for divorce if you living together before marriage..
And if read Mona Charen column citing studies by Charles Murray a couples of days ago, married people tend to be happier, children are more balanced and do better in school and it keeps women from going into poverty.
Also, google cohabitotion and divorce rartes.