Year	% of working-age population
1960	11.74415055988042
1961	11.85651692811314
1962	11.90004734296395
1963	11.999516085825636
1964	12.210128022701342
1965	12.421050211389327
1966	12.638607388528373
1967	12.869209023518478
1968	13.082954838026586
1969	13.41299954599765
1970	13.82890320524987
1971	14.166549948372511
1972	14.503157160817054
1973	14.8908153923355
1974	15.308230830496328
1975	15.757346448152159
1976	16.209763849134173
1977	16.670458923597863
1978	17.076835392283474
1979	17.41505444047966
1980	17.6869461937805
1981	17.849150297744217
1982	17.993039520920135
1983	18.146877618324435
1984	18.19417904860415
1985	18.3310240139266
1986	18.654115721327376
1987	18.96300636089722
1988	19.289795235005876
1989	19.61472359202484
1990	19.891040004148135
1991	20.149115544516555
1992	20.388970196795334
1993	20.637421152714772
1994	20.950534830449243
1995	21.3002212290103
1996	21.599734231327044
1997	21.825707155713157
1998	21.95939506362246
1999	22.083112542820817
2000	22.29077761151292
2001	22.53405911356725
2002	22.798623704979754
2003	23.134383842373694
2004	23.563907300333756
2005	23.89284936578708
2006	24.37730699638978
2007	24.78084440727318
2008	24.984279859219917
2009	25.402805744526844
2010	26.079767726333568
2011	27.13036181952249
2012	28.338046501493952
2013	29.56775565744476
2014	30.75814511756904
2015	31.855224890957206
2016	32.81368598444811
2017	33.746056112796985
2018	34.683183826233495
2019	35.54421188062703
2020	36.363139279473586
2021	37.113419557239084
2022	37.812847504778624
2023	38.42205049592233