https://www.bls.gov/charts/employment-situation/civilian-lab...
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...
https://fred.stlouisfed.org/searchresults?st=Labor+Force+Par...