Year	% of working-age population
1960	72.5958866036687
1961	74.38973620608698
1962	75.17280348090986
1963	74.99792916968937
1964	74.24936896407395
1965	73.15246856306736
1966	71.7542712219171
1967	70.07118562655977
1968	68.01495512450799
1969	65.49415860555276
1970	62.54728536713703
1971	59.58405762189843
1972	56.8272456997663
1973	54.07271215474401
1974	51.35213061185262
1975	48.67746619593539
1976	46.12193275781123
1977	43.675983954544975
1978	41.285129263586725
1979	39.14777392432994
1980	37.41422889020689
1981	36.25960701463085
1982	35.56777642372623
1983	35.00108806182908
1984	34.4700891418752
1985	33.958907918208475
1986	33.28933695656436
1987	32.3816575214388
1988	31.445614077930458
1989	30.585514498412465
1990	29.84088207795236
1991	29.235621629327518
1992	28.708438445135975
1993	28.162807788169093
1994	27.54443828805894
1995	26.830569879980082
1996	26.19980323567993
1997	25.71498641836963
1998	25.173709008701735
1999	24.520772436248144
2000	23.765457003014788
2001	23.07365991011265
2002	22.483450600237084
2003	21.782663298252423
2004	20.904076383207226
2005	19.920303909687412
2006	18.989811127031743
2007	18.290357041349367
2008	17.727655368411035
2009	17.134746637511608
2010	16.486133566190432
2011	15.961835557581184
2012	15.783165581709346
2013	15.815949352970787
2014	15.88163393682799
2015	15.910515554839833
2016	16.14460154884403
2017	16.62112777399076
2018	17.05736305110568
2019	17.459564264066934
2020	17.745342472892563
2021	17.843938132372426
2022	17.841454965008587
2023	17.77842135141453