Graduation rates in CS have declined in US, from 37% in the 80's to 18% in recent years. http://www.randalolson.com/2014/06/14/percentage-of-bachelors-degrees-c

Graduation rates in CS have declined in US, from 37% in the 80's to 18% in recent years. http://www.randalolson.com/2014/06/14/percentage-of-bachelors-degrees-conferred-to-women-by-major-1970-2012 http://www.randalolson.com/2014/06/14/percentage-of-bachelor.... 18% percentage of graduates correlates quite well with the percentage of women in tech roles at large American-based corporations. Especially if we take in account the explosive growth of the field, which makes the numbers dominated by recent grads. Google, 20%, https://www.google.com/diversity https://www.google.com/diversity Microsoft, 17.5%, https://www.microsoft.com/en-us/diversity/inside-microsoft/default.aspx#epgDivFocusArea https://www.microsoft.com/en-us/diversity/inside-microsoft/d... Apple, 23%, https://www.apple.com/diversity https://www.apple.com/diversity Amazon, ???, https://www.amazon.com/b/ref=tb_surl_diversity/?node=10080092011 https://www.amazon.com/b/ref=tb_surl_diversity/?node=1008009..., no "tech-role" category. Facebook, 19%, https://fbnewsroomus.files.wordpress.com/2017/08/fb_diversity_2017_final.pdf https://fbnewsroomus.files.wordpress.com/2017/08/fb_diversit... A whole different discussion could be had around ratios within the foreign-born slice of the workforce, which further skew the numbers one way or another. Alas, I could not find the data.