...which is not that surprising, because in the US more women than men have graduated from college over the past two decades (roughly):

https://www.pewresearch.org/wp-content/uploads/2021/11/ft_20...

In other words, this is a predictable consequence of the growing female-male gap in college enrollment and graduation rates:

https://www.pewresearch.org/fact-tank/2021/11/08/whats-behin...