+more context: pretty much every groups gone down since 2002 except elder people (55+)
https://fred.stlouisfed.org/searchresults?st=Labor+Force+Par...
https://fred.stlouisfed.org/searchresults?st=Labor+Force+Par...
The participation rate declining is primarily due to retirement.
https://www.census.gov/library/stories/2021/06/why-did-labor...