Composition of U.S. workforce by age, 1979 and 2017

Year Ages 16–24 Ages 25–54 Ages 55–64 Ages 65+
1979 22.73% 62.48%  11.76% 3.03%
2017 12.5  64.44  17.05 6.01 

Source: EPI analysis of Current Population Survey Outgoing Rotation Group microdata

View the underlying data on epi.org.