90 seconds on social media tells me it's more than 50%.
That's because modern America is training, teaching and making most women think and believe in things, feel things, and want things that will not make them happy.
They are being told only focusing on your career, only focusing on making more money than a man, only focus on your own selfish desires, not having children, only focus on how all men are toxic, how masculine men are what's wrong with the world, that being fat is awesome, that being beautiful really means being plain and ugly, that expressing disdain and scorn for men and our society is the right way to feel, that they are not equal and deserve to be special at the same time, and all of that other nonsense will make them happy. But it doesn't make them happy, it makes them unhappy and unsatisfied.
So it's no wonder they have mental issues. They are being trained to go against everything that has been making them feel happy and satisfied up till now.