Year	% of working-age population
1960	69.1000342192312
1961	66.7214588112864
1962	64.7623896057903
1963	63.19498581184322
1964	61.97955964057892
1965	61.108124142534024
1966	60.584410442311246
1967	60.373358804849644
1968	58.50358815278778
1969	54.717672716609755
1970	50.894484266796255
1971	47.65939755524696
1972	45.10328912819982
1973	43.168973668083616
1974	41.81721741286218
1975	41.007250250411296
1976	40.04072316683045
1977	39.167508332988795
1978	38.98917403702093
1979	39.333282208588955
1980	39.94107296877695
1981	41.25462372715099
1982	43.03704601878083
1983	44.557591898237376
1984	45.86714295589196
1985	46.923578302525804
1986	47.728196276760535
1987	47.8549474221465
1988	47.10290417278256
1989	45.83942069232704
1990	44.33115764959313
1991	42.76098847396424
1992	41.237306053584206
1993	39.79260772024426
1994	38.39264227282369
1995	36.97745432280241
1996	35.97117093119985
1997	34.96955944129152
1998	33.41076080483162
1999	31.667701708903618
2000	29.992217132864774
2001	28.53881992200292
2002	27.362913263369382
2003	26.434791546134374
2004	25.6772318240656
2005	24.65282195989731
2006	22.50968408259416
2007	19.806269821937644
2008	17.6434396391589
2009	16.3029050388911
2010	16.172015947308356
2011	16.716698255416308
2012	17.082942042047318
2013	17.31575728832862
2014	17.475884470947424
2015	17.635746685429847
2016	17.864168204573925
2017	18.209356171101284
2018	18.693026939572473
2019	19.307843605044688
2020	19.896832805603154
2021	20.339038587564087
2022	20.570706255440356
2023	20.601018704121373