Year	% of working-age population
1960	61.949302243070925
1961	63.226681254265074
1962	63.998982851824294
1963	64.18432194732003
1964	63.88653904719131
1965	63.4018868458065
1966	62.865093555004
1967	62.21531557829787
1968	61.42138018154684
1969	60.46904082347911
1970	59.420481795554494
1971	58.33572312818269
1972	57.19435610654833
1973	56.01053499407121
1974	54.86494253303409
1975	53.76740820412406
1976	52.712558648535236
1977	51.757600950156856
1978	50.961374333333175
1979	50.36492204761755
1980	49.89753711335863
1981	49.43925656516905
1982	49.03238710369825
1983	48.79440703546758
1984	48.70845729456249
1985	48.69294812397965
1986	48.8325470090334
1987	49.17745108540575
1988	49.72376408496041
1989	50.33970564756943
1990	50.88181925067205
1991	51.35513703704694
1992	51.74797743015843
1993	51.99745261885923
1994	52.093469410518104
1995	52.005502350428145
1996	51.65333026033234
1997	50.99713241599698
1998	50.03619830234432
1999	48.928148274344494
2000	47.91233880185731
2001	46.98884187091308
2002	46.100871373227335
2003	45.289285393314415
2004	44.5244474362223
2005	43.81968745730688
2006	43.1619683681836
2007	42.5049424611668
2008	41.90644942593925
2009	41.49525586754689
2010	41.34290300749336
2011	41.574919554969334
2012	42.26931885284378
2013	43.28330693457199
2014	44.41860465116279
2015	45.50248479548766
2016	46.52627897836468
2017	47.492798822176866
2018	48.38906395322879
2019	49.31692876003834
2020	50.1331598310113
2021	50.760211854854695
2022	51.42401158348802
2023	52.184358283871155