Looks like this already got political.
The Bureau of Labor Statistics
Bureau of Labor Statistics Data
Shows that since about 1980 we've had more than 63% labor participation. Before that we had less. Before 1965, less than 40% of women were employed outside the home. Play with the BLS query tool for kicks
The
TLDR graph looks a lot like this
(be sure to observe the scale on the left side there, so that the contours of the graph can be viewed in context)