Year	% of working-age population
1960	17.10236273407324
1961	17.536076503689944
1962	17.976759727384596
1963	18.397471134454808
1964	18.866510586212513
1965	19.350353827972278
1966	19.847787732934403
1967	20.385230626348044
1968	20.844115637054124
1969	21.23725269122118
1970	21.64640885861316
1971	22.041684077445634
1972	22.426625858661488
1973	22.792377144692686
1974	23.13376275670196
1975	23.38859512547703
1976	23.536400038113886
1977	23.718590013788006
1978	23.901862260845768
1979	23.98084517358449
1980	23.78927049136487
1981	23.1745986123914
1982	22.340049297310618
1983	21.50782371567217
1984	20.99183027873841
1985	20.978527853008355
1986	21.17894849903633
1987	21.348490967495348
1988	21.45110745539745
1989	21.508346037823912
1990	21.606645433158814
1991	21.744937495919885
1992	21.899920725021225
1993	22.121977798104673
1994	22.38928520068939
1995	22.66458286100618
1996	22.89157249099786
1997	23.050929203753896
1998	23.203113883184297
1999	23.554927965461427
2000	24.179367530879688
2001	24.904483525896794
2002	25.658296518193847
2003	26.469879500924126
2004	27.442276007057398
2005	28.515927636072323
2006	29.510845383871782
2007	30.18016340143575
2008	30.59575463713945
2009	30.97090336318774
2010	31.016014510999092
2011	30.867268545118563
2012	30.910304082906876
2013	31.086938298244327
2014	31.408774452955253
2015	31.817932600215375
2016	32.222313758276194
2017	32.635938177012704
2018	33.0861490130039
2019	33.622231516036734
2020	34.166339785105535
2021	34.66462734736876
2022	35.22508085834215
2023	35.95536352950701