Year	% of working-age population
1960	12.517583915856905
1961	12.61971134995193
1962	12.6815122249714
1963	12.712511385713759
1964	12.737862258494337
1965	12.798826137050568
1966	12.88430514537236
1967	13.018568513900625
1968	13.214457035864054
1969	13.42229848462922
1970	13.628213715286721
1971	13.842377128829336
1972	14.049817795554922
1973	14.232516307670542
1974	14.378227270213333
1975	14.474259156272346
1976	14.502817490587857
1977	14.493518939560628
1978	14.459856270767329
1979	14.403339351042593
1980	14.33512900481996
1981	14.275861421815177
1982	14.170323232787338
1983	14.12188624615957
1984	14.224976809327197
1985	14.417826001324954
1986	14.657542697005482
1987	14.930268199233717
1988	15.24581612692893
1989	15.58296108998023
1990	15.923996008767066
1991	16.20634624551804
1992	16.40183471209763
1993	16.61749768318987
1994	16.894040291326206
1995	17.207938834528385
1996	17.52564359430675
1997	17.819135483017444
1998	18.10650568225625
1999	18.408119903087
2000	18.756367189423177
2001	19.14864110166156
2002	19.516805087666633
2003	19.850515388337413
2004	20.140310698328374
2005	20.350799257704185
2006	20.465958731398942
2007	20.67939429195974
2008	21.40800718170629
2009	22.4763470383519
2010	23.55837366282793
2011	24.624960158036867
2012	25.574949094864856
2013	26.337519531182636
2014	26.937403193389525
2015	27.375881352617288
2016	27.600169881115637
2017	27.68956097684072
2018	27.722485999513026
2019	27.73288285786934
2020	27.72408121775232
2021	27.745761462061612
2022	28.245070673146426
2023	29.124077973275682