Year	% of working-age population
1960	40.62217394849763
1961	40.47579254359108
1962	40.20357823313528
1963	39.90536957404356
1964	39.66059850261387
1965	39.55413141750605
1966	39.55421724650904
1967	39.57912186668672
1968	39.55919876905023
1969	39.42243112594114
1970	39.177697053652565
1971	38.89200505707324
1972	38.65164429420501
1973	38.481648549020186
1974	38.382971148520134
1975	38.40559439093186
1976	38.494187036611116
1977	38.501250141431264
1978	38.393226273985334
1979	38.166762908454
1980	37.79725372285808
1981	37.246697859638125
1982	36.502399612645654
1983	35.64243220788219
1984	34.726425695355886
1985	33.731203055619616
1986	32.70133246100102
1987	31.712957719370603
1988	30.763952762172863
1989	29.81573580364753
1990	28.86789352684933
1991	27.962086129819376
1992	27.11435939515381
1993	26.296016616118845
1994	25.45922921439765
1995	24.59234974993288
1996	23.787246020453154
1997	23.098220606327192
1998	22.49678929384126
1999	22.005425344950435
2000	21.651386214198187
2001	21.423509654776613
2002	21.280235400201516
2003	21.178144254333496
2004	21.12839711464488
2005	21.20840913756084
2006	21.33519269420417
2007	21.428152590137408
2008	21.573622576673326
2009	21.782113381139222
2010	22.009218801224335
2011	22.220095560145676
2012	22.38450581986853
2013	22.49039372425465
2014	22.532072054959677
2015	22.50833290923033
2016	22.474776647905024
2017	22.454807827372633
2018	22.41287813583198
2019	22.351556680761934
2020	22.27704573416695
2021	22.16594590184303
2022	21.907534582237123
2023	21.49866626465911