Year	% of working-age population
1960	11.622183617083735
1961	11.782801079387557
1962	11.902302721362272
1963	12.012408156021607
1964	12.179060757165137
1965	12.415620764906816
1966	12.694119306109922
1967	12.988675676568917
1968	13.27068958147462
1969	13.54142620259496
1970	13.808231247193827
1971	14.060122780161397
1972	14.288808182550666
1973	14.514064297978276
1974	14.754610878227142
1975	14.995334611144271
1976	15.215564705435632
1977	15.40505632014359
1978	15.54730986830938
1979	15.609617267616457
1980	15.549735965506933
1981	15.346225020099654
1982	15.06815609618077
1983	14.810372162883844
1984	14.619797042217295
1985	14.511088691645291
1986	14.51823483976827
1987	14.698250207957292
1988	15.052494864504423
1989	15.492972320937575
1990	15.977837463080455
1991	16.52857100011789
1992	17.135772557216285
1993	17.764168323107686
1994	18.42147491309278
1995	19.057696394021974
1996	19.586545032351594
1997	19.986391885635722
1998	20.231916415587495
1999	20.3559812916286
2000	20.523757606370616
2001	20.802110908566824
2002	21.100175340907747
2003	21.382646050097538
2004	21.602114867436086
2005	21.698882024256093
2006	21.64697633717392
2007	21.41468858917476
2008	21.03611530780999
2009	20.607689610844922
2010	20.247557045977626
2011	20.129190866262615
2012	20.320003879455555
2013	20.741020488766782
2014	21.278817568342134
2015	21.804868581278203
2016	22.31594811979117
2017	22.86576081439696
2018	23.491063124406917
2019	24.212855980265562
2020	24.851134527522287
2021	25.37169487287072
2022	26.021349507859288
2023	26.8697980563548