Year	% of working-age population
1960	32.51270246750695
1961	32.62141318696589
1962	32.6242208247905
1963	32.51882002205312
1964	32.3668376206437
1965	32.28853070467564
1966	32.34215456056568
1967	32.50415027254546
1968	32.73990897656989
1969	32.98995621941798
1970	33.27530592391582
1971	33.538942870224346
1972	33.507252952222515
1973	33.06257708455319
1974	32.30773014584717
1975	31.300098225870997
1976	30.439323010442926
1977	29.860746190225957
1978	29.18900286458024
1979	28.351721042311418
1980	27.45491216960998
1981	26.612781649716467
1982	25.86116374095464
1983	25.16890754416287
1984	24.52609252794839
1985	23.919054254114776
1986	23.492080536912752
1987	23.28700316995855
1988	23.14741119302949
1989	23.09317207529977
1990	23.131887846634886
1991	23.401130174014156
1992	23.89387755102041
1993	24.332110785325337
1994	24.66222781340452
1995	24.84161182358781
1996	25.016357911094754
1997	25.21168522839588
1998	25.288196135736317
1999	25.24076600474963
2000	25.05634936606963
2001	24.953446929499627
2002	24.942821344046457
2003	24.83397637678728
2004	24.626420190435184
2005	24.320105486663888
2006	23.937486808526966
2007	23.559886517824104
2008	23.220558676009244
2009	22.903655165352717
2010	22.634683009220375
2011	22.542480473242133
2012	22.577202940013063
2013	22.555522978816974
2014	22.500228039770136
2015	22.427770825398554
2016	22.29554539234398
2017	22.25518492373404
2018	22.306777645659928
2019	22.36943513539258
2020	22.378494770661018
2021	22.272562063107003
2022	22.123797300584677
2023	21.993606170129297