Remember the stackoverflow poll results that came up last week? One of the interesting stats I saw was that the highest percentage of women in programming came from India, at 15%. The lowest percentage was from Sweden at 2%.
There was a Reddit discussion on why it seemed that countries with higher gender equality yielded less female software engineers. Personally, I think it makes sense; it seems that given more career options, women generally may prefer other fields over software. I dont think there is anything sexist about that observation (I would choose professional footballer over engineer).
As an anecdote, I once had a round-table style english class in college where most of the 20 students in the class were social-justice type folks, (bunch of Gryffindors). The topic of gender inequality in STEM came up, and some of the ladies were complaining about underrepresented women. I found it ironic that all of the ladies in the class were English, Sociology, or Psychology. None had interests in engineering ("oh, it's not for me"), but they still thought there should be more women because it conformed to some imaginary principle of equality. I think that's stupid.