Year	% of working-age population
1960	15.190965234188752
1961	15.358776653921819
1962	15.435585851719896
1963	15.524772798207321
1964	15.63011196798989
1965	15.696896663257558
1966	15.655433456223008
1967	15.649694489174218
1968	15.645779500392393
1969	15.56948449642051
1970	15.556519874440298
1971	15.549802391114508
1972	15.569274781986133
1973	15.642759714815316
1974	15.748523179154216
1975	15.890051514221383
1976	16.08671977032077
1977	16.30018057738622
1978	16.473522083216995
1979	16.60500995225231
1980	16.70729831325044
1981	16.831566067966225
1982	16.963502969058226
1983	17.05295810461612
1984	17.215432331305152
1985	17.440141753631913
1986	17.607391830774606
1987	17.755436497755824
1988	18.03681757100045
1989	18.282082656660346
1990	18.354086322997663
1991	18.48339904870911
1992	18.65081711443478
1993	18.740599559311477
1994	18.852445614871097
1995	18.95246286686409
1996	18.959656038826118
1997	18.899323757070366
1998	18.814522143943123
1999	18.70253353299343
2000	18.558146825726993
2001	18.497397484990167
2002	18.45278906242528
2003	18.409920590838496
2004	18.41975204777906
2005	18.47088594863002
2006	18.54180488125675
2007	18.666258545694582
2008	18.924695018951123
2009	19.222404713308556
2010	19.501893612084675
2011	19.912141977338408
2012	20.460684342911108
2013	21.0036611332958
2014	21.443799460207053
2015	21.79466670096613
2016	22.399648723666743
2017	23.091525233626193
2018	23.673928651680757
2019	24.360522693760384
2020	25.10773804423692
2021	25.89472573787898
2022	26.674055620488485
2023	27.47829790805908