Year	% of working-age population
1960	60.553240289353106
1961	59.28536972124556
1962	57.743489640038945
1963	56.34952429508395
1964	55.24721054271673
1965	54.30646583553559
1966	53.539229037407864
1967	52.83688119772903
1968	52.12598016117932
1969	51.567455406971305
1970	50.997331990641804
1971	50.228626708837254
1972	49.486103530645956
1973	48.948726264701484
1974	48.600569365163544
1975	48.42826003608444
1976	48.34892792542221
1977	48.3174741878754
1978	48.17856027098199
1979	47.93236706876462
1980	47.67759030992447
1981	47.35143027124532
1982	47.07479498518872
1983	46.92990538402395
1984	46.78822339054858
1985	46.83215890513699
1986	47.119650178494396
1987	47.4282605576546
1988	47.88526104621787
1989	48.332223813132096
1990	48.59465623991463
1991	48.781406997896056
1992	48.95374745416312
1993	49.183303780017326
1994	49.490259237573184
1995	49.80661892093153
1996	49.994599744475714
1997	49.98199574667753
1998	49.74340065179896
1999	49.49046228396414
2000	49.41348338736941
2001	49.43460920951288
2002	49.51447881220955
2003	49.645264456316646
2004	49.857084383846235
2005	49.91852651588976
2006	50.15311071358717
2007	50.29698648449335
2008	50.22910126032553
2009	50.48127549421285
2010	51.097107678993105
2011	52.22784431053139
2012	53.593232783224146
2013	55.02775350260776
2014	56.414438497313476
2015	57.642172783160994
2016	58.65728768451374
2017	59.601614150561524
2018	60.471587444196686
2019	61.1266889668803
2020	61.685191336466325
2021	62.127500701497006
2022	62.46318258601013
2023	62.683498252342105