Year	% of working-age population
1960	14.526701592566132
1961	14.76742911219876
1962	14.952589088078222
1963	15.074072283241403
1964	15.258111923263442
1965	15.514252344387112
1966	15.810714508481214
1967	16.149467848040466
1968	16.473679221990743
1969	16.820013970946817
1970	17.23509396317217
1971	17.679908096183134
1972	18.096160775673727
1973	18.46989443141527
1974	18.860129037254424
1975	19.225610543678595
1976	19.55446648555778
1977	19.896345549292604
1978	20.24824214684475
1979	20.557007536081212
1980	20.589894818054084
1981	20.40659870744916
1982	20.113728023317435
1983	19.6492217879474
1984	19.305331049558802
1985	19.453748741727754
1986	19.908271069858433
1987	20.371857080999213
1988	20.858297704363302
1989	21.345829776049165
1990	21.828790312454295
1991	22.26721347339086
1992	22.741583080266413
1993	23.28244738738055
1994	23.812493608543544
1995	24.423241464681773
1996	25.054992617112127
1997	25.593536038129315
1998	26.09736532727848
1999	26.610749447768196
2000	27.153574052871715
2001	27.68122010535113
2002	28.19800312816698
2003	28.67431119349212
2004	29.175678600544412
2005	29.78724724442146
2006	30.322533872185513
2007	30.61444241023278
2008	30.775032308817547
2009	30.972287226969957
2010	31.150886969531687
2011	31.59476186713871
2012	32.27842065398409
2013	32.94722922340472
2014	33.648476286408204
2015	34.246568778138666
2016	34.74301394799176
2017	35.168977923165976
2018	35.575857371564176
2019	36.104456112580586
2020	36.65062012142272
2021	37.19365674000592
2022	37.87000788691269
2023	38.6166718569658