Year	% of working-age population
1960	31.235493163187144
1961	32.31431843060687
1962	33.23294803539559
1963	34.03652910518988
1964	34.740117926895294
1965	35.31514963261197
1966	35.848964600474815
1967	36.34197914820903
1968	36.719070981524716
1969	36.935773388756715
1970	36.97127043872422
1971	36.81894778518968
1972	36.43059872000832
1973	35.78190073582256
1974	34.919140312368086
1975	33.89549543080069
1976	32.75158317070823
1977	31.558251512646578
1978	30.336169845988355
1979	29.089015056112533
1980	27.870553343317223
1981	26.66548998003429
1982	25.506143365348876
1983	24.46158421262701
1984	23.616370437416737
1985	23.060852876580622
1986	22.749184135586503
1987	22.661848482281354
1988	22.812676592230783
1989	23.089259611728245
1990	23.41013775247348
1991	23.67414640373453
1992	23.8121259632134
1993	23.882608275456004
1994	23.875260033876806
1995	23.755954593707106
1996	23.57804911254587
1997	23.40134449400308
1998	23.227655484321474
1999	23.082971443023396
2000	22.966198664885656
2001	22.795722626831278
2002	22.53796540767732
2003	22.227200560844107
2004	21.921094408879434
2005	21.62282652285675
2006	21.358962574653827
2007	21.144511983439674
2008	20.950568807440366
2009	20.788645281427375
2010	20.61818157072483
2011	20.409814651942877
2012	20.19992717096866
2013	20.05024024811761
2014	20.00342228117065
2015	20.054213299476466
2016	20.229034314789075
2017	20.508241089922166
2018	20.80917679353514
2019	21.102950678520873
2020	21.391630672283604
2021	21.691768376097258
2022	21.936955015111455
2023	22.11157126871524