Here is an initial look at the prime age (25 to 54) participation rate.
The first graph shows the prime age participation rate since 1948.
There are two clear long term trends:
1. The participation rate for prime age women increased significantly from around 34% in the ’40s to around 77% in 2000 (and then started declining).
2. The participation rate for prime age men has gradually been decreasing, from close to 97% in the ’40s to around 88% in 2014.
The second graphs show the trend since 2010.