A few pertinent facts:
- For the overall period (1665-2011), only 22% of authorships of any author position are women
- Women had the highest percentage of authorships (37.3%) for Education
- Women were the least represented in Mathematics (6.6%)
- During the period of 1990-2011, the overall percentage of female authors rose to just over 27%. In other words, men were still over twice as likely to be authors than women.
(The Chronicle of Higher Education has a very nice interactive graphic of the results, but you’ll need an online subscription to access it).