Year	% of working-age population
1960	39.39999556348349
1961	38.78512100086879
1962	38.066320815431006
1963	37.30715036345201
1964	36.58559707509428
1965	35.99748224907734
1966	35.52844233206408
1967	35.11684440087233
1968	34.87013969116416
1969	34.82976957711663
1970	34.80681902724371
1971	34.71931430931568
1972	34.616448410290985
1973	34.5937279320342
1974	34.73489419793084
1975	34.89772519011232
1976	34.97856403908618
1977	35.03553365490879
1978	35.03775083614943
1979	34.95751966829979
1980	34.80187366584907
1981	34.579663844163925
1982	34.32061098574951
1983	33.8949910686485
1984	33.33754956978259
1985	32.87382293208449
1986	32.548976402066806
1987	32.318839103178
1988	32.0418809935825
1989	31.583848935563957
1990	31.0139097207842
1991	30.35430052502488
1992	29.58964976895091
1993	28.801402978755057
1994	27.96737475821497
1995	27.097509889288645
1996	26.26578433414133
1997	25.422806566074584
1998	24.56164928953989
1999	23.79131073605085
2000	23.122479893479998
2001	22.444215639704762
2002	21.750893684653473
2003	21.087108836234727
2004	20.485603922415578
2005	20.02053624445475
2006	19.754840944102387
2007	19.688691210438826
2008	19.75428148409835
2009	19.954667732443102
2010	20.269371963877976
2011	20.59208899077081
2012	20.943890438303328
2013	21.30202182914936
2014	21.502470290432747
2015	21.582183485315838
2016	21.67451529641414
2017	21.797957669618196
2018	21.911157891103464
2019	21.97608816288564
2020	22.00243273866891
2021	22.009761830989298
2022	21.99707985616128
2023	21.922121252201787