Year	% of working-age population
1960	50.82255230793803
1961	51.10190800177489
1962	51.39518900343643
1963	51.691440287032286
1964	52.01245807379012
1965	52.17098619993268
1966	52.70341207349082
1967	53.93489099618731
1968	54.95372890582472
1969	55.17705442005215
1970	54.70904416919841
1971	53.83838383838384
1972	52.7055046485185
1973	51.42466943944379
1974	50.14146313297535
1975	48.95187799752115
1976	47.86734642370401
1977	46.86565747639159
1978	45.92124714420105
1979	44.945871364890685
1980	43.704600484261505
1981	42.153810676813094
1982	41.33435863634699
1983	41.1386881697909
1984	40.5752182896754
1985	39.62582865884753
1986	38.92950709803205
1987	38.62584756860577
1988	38.27346143135617
1989	37.906262518360265
1990	37.500962550373465
1991	36.999233867978155
1992	36.51811248808389
1993	36.19514665929916
1994	36.012567965059276
1995	35.9694042911778
1996	36.28657020842629
1997	36.944509135562
1998	37.633545880663824
1999	38.29092594152835
2000	38.87966717794634
2001	38.89287103975097
2002	38.39046781912296
2003	37.90491118077325
2004	37.37299787511383
2005	36.69303743278879
2006	36.6207977110937
2007	37.088740792704314
2008	37.34537246049661
2009	37.4432368048835
2010	37.2567458641999
2011	37.43962293549392
2012	38.0984792501264
2013	38.65208268573205
2014	38.970816516609744
2015	39.06689151208544
2016	39.08883477460549
2017	38.658428949691086
2018	38.13092717061044
2019	37.95832806259826
2020	37.98792399218611
2021	38.14059987415227
2022	38.43192341709589
2023	38.82715942380697