Year	% of working-age population
1960	15.395741494480333
1961	15.575261354729438
1962	15.658327712648987
1963	15.759153616407955
1964	15.880099862268624
1965	15.959001944203132
1966	15.920179574539342
1967	15.922033978327216
1968	15.923958137712962
1969	15.841873297136452
1970	15.833928753680013
1971	15.839391016133128
1972	15.861915916824506
1973	15.940915810033008
1974	16.05712780666694
1975	16.209504497672853
1976	16.416199031898106
1977	16.636666333123625
1978	16.808489372994135
1979	16.931937705940015
1980	17.024588142114403
1981	17.14300669037505
1982	17.271303541715266
1983	17.35023714842483
1984	17.504439457032998
1985	17.71980618391342
1986	17.867803984374348
1987	17.995093908332958
1988	18.274563453675615
1989	18.519203874244266
1990	18.568145139735822
1991	18.68017819287457
1992	18.836999403950387
1993	18.91124777576783
1994	19.014469826726362
1995	19.105703662080366
1996	19.094026026657364
1997	19.007381967981058
1998	18.89566153255353
1999	18.75981502980284
2000	18.590693849514615
2001	18.514558935682544
2002	18.45722812456885
2003	18.39951366421328
2004	18.39827978297458
2005	18.440046189052318
2006	18.496666093360165
2007	18.60533192610461
2008	18.857287320102518
2009	19.149304724661533
2010	19.41463512395448
2011	19.81041550833143
2012	20.34410573486751
2013	20.866255173673647
2014	21.275348724621445
2015	21.58604197727977
2016	22.179197000681537
2017	22.870061940742065
2018	23.439484292526576
2019	24.119820081177895
2020	24.85763873488128
2021	25.62905689784073
2022	26.386498796408485
2023	27.168160430017362