I was expecting it to actually be slightly lower(probably 7-8%?), simply because I barely see women on bitcoin/cryptocurrency conferences besides event hosts(though I'm aware that this is a very inaccurate metric). This is not only in the bitcoin and cryptocurrency industry anyway, but in the technology industry in general, so it's really not surprising.
EDIT:
Only 20% of Tech Jobs are Held by Women:
https://smallbiztrends.com/2018/03/women-in-technology-statistics.html