Comment by janpieterz

It could be that, but it could also be because we're marrying so much less [1] which changes the landscape (who marries for what reasons). I'd say that 1000 marriages 20 years ago aren't all that comparable to a 1000 marriages now.

[1] http://www.theguardian.com/news/datablog/2010/feb/11/marriag... I know the article is a bit old, the trend is still visible though.