Year	% of working-age population
1960	36.559016976205335
1961	36.522273623370225
1962	36.73121792454713
1963	36.74026198591728
1964	36.7550559025986
1965	36.90356693296436
1966	37.062191345498285
1967	37.036067687084255
1968	36.86008642698826
1969	36.62816444156737
1970	36.634005835557
1971	36.690234343120686
1972	36.33276639652827
1973	35.779726952436874
1974	35.1854002609526
1975	34.51500711052836
1976	33.704791086378115
1977	32.79155722966421
1978	31.815122050971556
1979	30.760126578621467
1980	29.725375459980917
1981	28.76010609799971
1982	27.864924567263106
1983	27.07655111689983
1984	26.393869123759885
1985	25.827549618581447
1986	25.38663127214639
1987	25.070675055827213
1988	24.920976920809494
1989	24.897271596926547
1990	25.017730515770083
1991	25.210107754970462
1992	25.466705191720873
1993	25.78016968791515
1994	25.981594276475796
1995	26.096034498906164
1996	26.164361929829997
1997	26.152552844582704
1998	26.06549600942672
1999	25.961001708350462
2000	25.819202964482457
2001	25.359531582295702
2002	24.83865524266008
2003	24.494456607278504
2004	24.121397859700128
2005	23.734111112582283
2006	23.33850784543792
2007	22.952329751262766
2008	22.624277864534598
2009	22.399992875109383
2010	22.28546841508125
2011	22.20530110185588
2012	22.110928845161467
2013	22.07065522626326
2014	22.077148250554963
2015	22.097875163929025
2016	22.179668780812758
2017	22.32920131950386
2018	22.500244529371283
2019	22.64737854188801
2020	22.74388990214892
2021	22.837573794472597
2022	22.92126312018056
2023	22.964826171766227