How often do women philosophers receive extended discussion?

Eric Schwitzgebel has done some more really useful analyses, this time of the frequency with which women philosophers receive extended discussion.  His results show improvement over the decades, though they also still clearly indicate a problem:

 

1970s
Ethics: 8/92 (9% women)
General journals: 4/134 (3%)

1980s
Ethics: 3/77 (4%)
General: 0/137 (0%)

1990s
Ethics: 20/147 (14%)
General: 9/189 (5%)

2000s
Ethics: 16/184 (9%)
General: 16/229 (7%)

2010s
Ethics: 19/120 (16%)
General: 27/244 (11%)

For more, including his methodology, click here.