Year	% of working-age population
1960	75.20326681422804
1961	80.49559989055268
1962	84.78397529289086
1963	87.85095847464456
1964	89.97326681809803
1965	91.22765473695983
1966	91.84007349497915
1967	91.8670417647027
1968	91.24982089485974
1969	90.0514266475556
1970	88.30992383359259
1971	86.0804005870825
1972	83.40472038994062
1973	80.34874577256556
1974	77.04716038536884
1975	73.61118370645926
1976	69.65765975929058
1977	65.48891583955849
1978	61.80446105785492
1979	59.130307227614296
1980	57.35094812674688
1981	55.860545087525495
1982	54.85385426601622
1983	54.16021869063615
1984	53.783803024351926
1985	53.73351543837492
1986	53.90255545119555
1987	54.326831012886366
1988	54.86635069418174
1989	55.77722712799723
1990	56.58623859369371
1991	56.92524684563847
1992	57.15704099419967
1993	57.247450806812125
1994	56.94226257079757
1995	56.212822313643585
1996	55.192522698214496
1997	53.92940108513369
1998	52.44659005843686
1999	50.73989214323483
2000	48.818721507208146
2001	46.754503174234195
2002	44.68508411309286
2003	42.68952036532123
2004	40.81275800606111
2005	39.08406436721699
2006	37.56224886875713
2007	36.29619495325581
2008	35.26015896898328
2009	34.45028553717309
2010	33.899693658927745
2011	33.654075506283355
2012	33.71923442218052
2013	34.00388682351792
2014	34.39751316063748
2015	34.8226855677091
2016	35.20398830602694
2017	35.38370633589348
2018	35.33812850444482
2019	35.20592850127795
2020	34.95320569408754
2021	34.49464522433483
2022	33.82732411832766
2023	32.99861783225588