I found some numbers, albeit a little old: Exemplar: Bulgaria The participation rate for women in these fields is slightly higher than for men: 7.8 percent of

I found some numbers, albeit a little old: Exemplar: Bulgaria The participation rate for women in these fields is slightly higher than for men: 7.8 percent of the female college-age cohort obtained an NS&E degree in Bulgaria in 1992; 7.2 percent of males in this age group obtained such a degree in that same year. In 1992, women obtained 57 percent of all university degrees. In addition, they obtained half of the engineering degrees, 70 percent of the natural science degrees, and 73 percent of the mathematics and computer science degrees. These percentages have not changed since 1975 (Stretenova, 1994). http://anitaborg.org/files/womenhightechworld.pdf http://anitaborg.org/files/womenhightechworld.pdf