Women in that age range are generally more educated than their male counterparts and they earn more, so this statistic makes sense. They also have trouble finding a male partner, especially because one of their requirements is that they should earn more than them.
This sounds like an impending demographics / societal disaster.
I guess if this trends continue we'll get to a point where basic necessities will all raise in price because they can't find workers until some of these men go back to work.