Between 2001 and 2008 there was a 79% decline in number of incoming undergraduate women interested in majoring in computer science
See https://www.heri.ucla.edu/monographs/50YearTrendsMonograph2016.pdf p. 293 ish
Trend from 2008 - 2015 grows from 0.3 to 1.7 (weighted in some way–I