> The youngest sister may even grow up in a world where she doesn't have the same barriers as most women today.

If there are fewer barriers, then you might see growth. Unfortunately this is difficult to tell. Some surveys show growth, others don't:

S.O. survey respondents 5.8% women (2016) - http://stackoverflow.com/research/developer-survey-2016

S.O. survey respondents 5.8% women (2015) - http://stackoverflow.com/research/developer-survey-2015

Google: 17% women (2014) - http://www.usatoday.com/story/tech/2014/05/28/google-release...

Facebook: 15% women (2014) - http://techcrunch.com/2014/06/25/facebook-diversity/

12.33% women engineers in tech (2013) - http://qz.com/143967/the-tech-industrys-woman-problem-statis...

10-12% developers are women in L.A. (2012) - http://www.forbes.com/sites/lorikozlowski/2012/03/22/women-i...

International Game Developers Association reported women went from from 11.5% to 22% between 2009 and 2014(?) - http://www.gamespot.com/articles/percentage-of-female-develo...

Why?

In addition to there being fewer women in the pipeline for tech jobs, it's been said that a good percentage of the ones that would've stayed in the workforce were harassed, etc. and left: http://www.vox.com/2016/1/17/10781366/women-technology-sexua...

And then there is the wage inequality problem, shown in the stack overflow survey results- see "Salary by Gender" in http://stackoverflow.com/research/developer-survey-2016

Possibly men are more likely to hire men, which could cause problems with growth in women's share of the market.

Of course there are also problems like having fewer role models when there are fewer in the industry, not having government and schools enabling women via scholarships, funding, etc. as much as they could, or possibly it's genuine lack of interest, but I don't think that's the case.

Development was invented by women, and it would be great if they made up a greater percentage: http://www.scientificamerican.com/article/in-celebration-of-...