Year	% of working-age population
1960	16.513405179933326
1961	16.715845411861633
1962	16.91885849513572
1963	17.132098471989767
1964	17.37128076834486
1965	17.615059655278948
1966	17.859078215126978
1967	18.13402637046918
1968	18.45280852515452
1969	18.77928995792374
1970	19.11935493633344
1971	19.470719926805693
1972	19.819461166491898
1973	20.185528803057814
1974	20.57659080352996
1975	20.965807608319604
1976	21.303086614901805
1977	21.637209565183205
1978	21.953092708391566
1979	22.16903034891508
1980	22.28632792438958
1981	22.335961354254465
1982	22.389737312736198
1983	22.48521060752747
1984	22.57412416829835
1985	22.737008292100445
1986	22.97454350302865
1987	23.094992775937303
1988	23.14711397850463
1989	23.199704475291412
1990	23.185620779484864
1991	23.13167372384694
1992	23.063764508545333
1993	22.945294914645984
1994	22.7963174294249
1995	22.63878617571994
1996	22.501432353908378
1997	22.401850244431746
1998	22.326212090161626
1999	22.27053251482957
2000	22.2507360614506
2001	22.26541792826753
2002	22.31163251725101
2003	22.405362936906016
2004	22.55128526376355
2005	22.752075701259457
2006	22.991378191490693
2007	23.349552688331766
2008	23.87578844791907
2009	24.53767280934506
2010	25.337561839841182
2011	26.250466638323733
2012	27.166750455134174
2013	27.94250221240768
2014	28.580293108652988
2015	29.14692221829271
2016	29.653256141377437
2017	30.123495227639758
2018	30.586803785712434
2019	31.034648198696356
2020	31.478617201346587
2021	31.886046837705468
2022	32.286641145663275
2023	32.714065650357185