Year	% of working-age population
1960	12.568559284918432
1961	12.934515014476137
1962	13.25153842790627
1963	13.563358043339655
1964	13.942472767974218
1965	14.387660194854213
1966	14.825331568067265
1967	15.226524272675517
1968	15.60584968285474
1969	15.958765884380243
1970	16.329706717603536
1971	16.756898393364235
1972	17.19899187414086
1973	17.58822463679409
1974	17.8243046010264
1975	17.874608102731813
1976	17.824555055222323
1977	17.74096612345378
1978	17.61299921777136
1979	17.42798035748016
1980	17.147980365739205
1981	16.771796502749403
1982	16.36045509552573
1983	15.960172971838984
1984	15.658990632535472
1985	15.50465386913987
1986	15.503602603633663
1987	15.639895840980156
1988	15.87854578757574
1989	16.169704441108593
1990	16.49603812177926
1991	16.84609041980887
1992	17.258226134498027
1993	17.720067350929288
1994	18.134090670660687
1995	18.55830188466365
1996	19.027177953835288
1997	19.534540613758587
1998	20.07414135665286
1999	20.59287637342959
2000	21.15759669056089
2001	21.787559036677553
2002	22.414426795011032
2003	23.047036190691692
2004	23.680370536635294
2005	24.26566428647784
2006	24.8393777945439
2007	25.402872885035332
2008	25.91090595525309
2009	26.340424551436293
2010	26.779887266673658
2011	27.223505040440806
2012	27.610543302850992
2013	28.042651708126005
2014	28.575041786502524
2015	29.11792534534838
2016	29.618922665243463
2017	30.128155297877395
2018	30.601425105294577
2019	31.115206183006666
2020	31.65416511367872
2021	32.058001951186974
2022	32.55497679746403
2023	33.493230301647976