Year	% of working-age population
1960	68.24440870119615
1961	71.6586231579258
1962	73.87255096267842
1963	74.96710946984496
1964	75.34486613880007
1965	75.12740612505667
1966	74.35936947345141
1967	73.24715018176843
1968	71.8675461619068
1969	70.21173642092107
1970	68.29330550897181
1971	66.10565242572655
1972	63.641129636995544
1973	60.98908519827248
1974	58.24521207138367
1975	55.53900189572357
1976	53.18932000761897
1977	51.38618724400488
1978	49.996364383935706
1979	48.75518830553261
1980	47.780787424844796
1981	47.252970462835954
1982	47.0566994673429
1983	47.141094712929494
1984	47.30258225670064
1985	47.384297882311756
1986	47.415394235794814
1987	47.4097433042228
1988	47.39805571836553
1989	46.949926349727164
1990	46.740811827214564
1991	47.106403325633835
1992	47.729417781855375
1993	48.387086405626235
1994	48.56093715718688
1995	48.24165480187527
1996	47.5220552786289
1997	46.64961332017129
1998	45.46396695017844
1999	43.873199074108236
2000	42.02949495327969
2001	40.18244622234521
2002	38.49279175476524
2003	36.91286028606127
2004	35.33716225964626
2005	33.664556198300296
2006	31.868979787724783
2007	30.125462052942765
2008	28.74344806674071
2009	27.869842218220796
2010	27.3592550716025
2011	27.077874152769034
2012	27.05243096347588
2013	27.25050587599126
2014	27.640867306864962
2015	28.14847331724577
2016	28.69077115023504
2017	29.219723396250107
2018	29.657995633282617
2019	30.00446891900883
2020	30.25085107251302
2021	30.558017225434458
2022	30.85211814422812
2023	30.937806192837176