Why Women Aren't Getting an Economics PhD?

In the us. Women are now 60 % of college graduates, but just not pursuing math as a profession. I looked up the data and the gen of people getting math phd. And for pure math, it's still only about 25% female. If we are perpetuating this idea that you have to be a wedo to be an academic, you're losing the people that could contribute in new ways to your field.