I remember reading a year 2000 US Census statistic that the number of women in households full-time jumped 13% from 1990 to 2000. This seems to correspond with your data.
It’s possible we could infer from both that even more women are staying home to be full-time housewives/mothers.
It kind of makes me question the statistic of 100 million+ that have stopped looking for work in the US. What percentage of that number are women who have decided voluntarily to stay home full-time?
Good observation. In fact the participation rate has declined almost commensurate with women leaving the workforce.
Certainly a lot by choice. A lot of it structural (women participation rate started increasing in the 60's and 70's. Those people are now near retirement age.) Certainly some not by choice (very weak economy)
BTW this data is from the Federal Reserve of St. Louis database.