Year	% of working-age population
1960	63.018242122719734
1961	64.72398932895547
1962	66.59220146222583
1963	68.47498493068113
1964	70.07748857540234
1965	71.06499608457322
1966	71.68431183830606
1967	71.95467422096317
1968	71.9282013323464
1969	71.5865820489574
1970	70.21720243266725
1971	67.80566801619433
1972	65.06602641056422
1973	62.33258928571429
1974	59.45981041423192
1975	56.638777737359035
1976	53.93450079599727
1977	51.29467151722662
1978	48.69565217391305
1979	46.14280245022971
1980	44.20119413786864
1981	42.79733424470267
1982	41.31944444444444
1983	39.85485103132162
1984	38.44372059355773
1985	37.11793392403324
1986	35.8346394984326
1987	34.561294337274425
1988	33.40664566367473
1989	32.407722884724585
1990	31.445186301959936
1991	30.487123482501143
1992	29.63211987321103
1993	28.93574388633362
1994	28.37223401030615
1995	27.91196994095545
1996	27.509469696969695
1997	27.13113824518958
1998	26.74241324234064
1999	26.376274975548412
2000	26.27481379124398
2001	26.2890625
2002	26.16540408009304
2003	25.977891156462583
2004	25.720490696718905
2005	25.412719124071025
2006	25.074749691400356
2007	24.73657669135016
2008	24.40823459867897
2009	24.11764705882353
2010	23.943013592421195
2011	23.85585415387522
2012	23.701074178230602
2013	23.446537483401976
2014	23.177409777660486
2015	22.943834732085218
2016	22.767330072524878
2017	22.673119880863737
2018	22.610462163534788
2019	22.521622755328284
2020	22.346928746928747
2021	22.262887400716398
2022	22.330360604885616
2023	22.36204666962614