The Chronicle of Higher Education has a very interesting chart, proportion of doctorates awarded to women by discipline over the last thirty years.
| All fields | Education | Engineering | Humanities | Life sciences | Physical sciences | Professional/ other | Social sciences | |
|---|---|---|---|---|---|---|---|---|
| 1977 | 24.8 | 34.7 | 2.8 | 36.3 | 20.8 | 9.8 | 21.2 | 28.7 |
| 1987 | 35.3 | 55.1 | 6.5 | 44.4 | 35.2 | 16.5 | 33.2 | 43.4 |
| 1997 | 40.9 | 63.3 | 12.4 | 47.7 | 44.9 | 22.2 | 38.4 | 52.8 |
| 2007 | 45.5 | 67.4 | 20.7 | 49.3 | 51.4 | 28.1 | 50.8 | 58.7 |
| Note: Figures include both U.S. citizens and noncitizens. Life sciences include agriculture and natural resources. Physical sciences include mathematics and computer and information sciences. | ||||||||
