Year	% of working-age population
1960	18.06058313396303
1961	18.187827106980865
1962	18.26691916846879
1963	18.359235455083933
1964	18.569736227737625
1965	18.898424476863422
1966	19.242733718766384
1967	19.619862133143844
1968	19.993722736008547
1969	20.343330538416602
1970	20.72114666358499
1971	21.114396737582318
1972	21.47842275240334
1973	21.806604243170906
1974	22.12154553416507
1975	22.411207840700786
1976	22.637962746477797
1977	22.840869739978352
1978	23.051226256103906
1979	23.214998894451217
1980	23.317309878528373
1981	23.316284048285084
1982	23.15527674882955
1983	22.90052481688433
1984	22.826687788103715
1985	23.04902285940356
1986	23.356388419210393
1987	23.614922224998715
1988	23.812792183380836
1989	23.949855444972986
1990	24.083278268037738
1991	24.22034430838847
1992	24.33213528622177
1993	24.38525387304253
1994	24.405365537997064
1995	24.411959430662016
1996	24.39368325508893
1997	24.361129366045837
1998	24.286610979418352
1999	24.181383180527096
2000	24.10017970085818
2001	24.061414361380407
2002	24.036085804663692
2003	24.009684094455615
2004	23.996252164935896
2005	23.964330365515075
2006	23.916258266640288
2007	23.95339565805473
2008	24.123855751288925
2009	24.408171122721726
2010	24.751090106546854
2011	25.23474978701389
2012	25.919729049882356
2013	26.598743112487398
2014	27.154107740292183
2015	27.603332963933397
2016	27.98563949767478
2017	28.35783526264323
2018	28.731812467802825
2019	29.138519780705675
2020	29.48931512065109
2021	29.825444335549495
2022	30.253877581066313
2023	30.72757314552983