By request here is a look at the participation rate of women in the prime working age groups over time.

The first graph shows the trends for each prime working age women 5-year age group.
Note: This is a rolling 12 month average to remove noise (data is NSA), and the scale doesn't start at zero to show the change.
For women, the participation rate increased significantly until the late 90s, and then started declining slowly. This is a more complicated story than for men, and that is why I used prime working age men only yesterday to show the gradual downward decline in participation that has been happening for decades (and is not just recent economic weakness).

The third graph is a repeat of the full scale graph for prime working age men. The participation rate has been trending down for decades.
