Year	% of working-age population
1960	39.427370292192606
1961	38.5058669109801
1962	37.26466499856597
1963	36.24979414628016
1964	35.60417264994557
1965	35.01715637307459
1966	34.31426308694813
1967	33.59087733637736
1968	32.94398503080393
1969	32.420137552350155
1970	32.02400281913123
1971	31.782889691821374
1972	31.788590115413882
1973	32.185321865734096
1974	33.05548414289798
1975	34.13737182098872
1976	35.149797006751164
1977	36.0279557834151
1978	36.68192810651503
1979	37.04757280447362
1980	37.14961777882151
1981	37.045519207550335
1982	36.83480970767439
1983	36.579162848203204
1984	36.33417870726817
1985	36.120067249941535
1986	35.83818977084157
1987	35.37747312480049
1988	34.6436489963363
1989	33.61305124455695
1990	32.44804756335843
1991	31.37206725624775
1992	30.360006950779788
1993	29.36197700497149
1994	28.352734287383118
1995	27.392194319461304
1996	26.549116819318236
1997	25.761908973035887
1998	25.023891880527106
1999	24.306458010963933
2000	23.591457152122306
2001	22.902189160147298
2002	22.267388190576366
2003	21.662152234868852
2004	21.11440267965045
2005	20.64989225286037
2006	20.260587131262263
2007	20.040054540032457
2008	20.009663608512927
2009	20.16648968652279
2010	20.534813807504328
2011	20.99291742570973
2012	21.462568106051126
2013	21.94608204844852
2014	22.43570502599076
2015	22.916560838271874
2016	23.37529463717332
2017	23.82104807080856
2018	24.2565674746148
2019	24.665323468318988
2020	24.989806930233744
2021	25.183853350523687
2022	25.160018603257168
2023	24.899944432908246