Year	% of working-age population
1960	91.1254463771455
1961	93.34103327262227
1962	94.97476691472072
1963	95.74629466390603
1964	95.57002875080678
1965	94.50700561192255
1966	92.72349638287012
1967	90.45067234722407
1968	87.95891402145531
1969	85.49491101720136
1970	83.25809728021667
1971	81.55677680287008
1972	80.42994143013452
1973	79.15565979508703
1974	77.26194270335351
1975	74.93354359089885
1976	72.43294340068533
1977	69.9926196236008
1978	67.82054045580136
1979	66.08081718491813
1980	64.81810555560567
1981	63.977761369065725
1982	63.3284796143804
1983	62.621910460743024
1984	61.84632547761818
1985	61.067974187394746
1986	60.34684235806921
1987	59.75381599022443
1988	59.29952334034565
1989	58.93595273758172
1990	58.61078826827101
1991	58.56877569969492
1992	59.035946174837676
1993	59.52979047509557
1994	59.59789748854221
1995	59.24150671155613
1996	58.43182687810893
1997	57.163262464741884
1998	55.53368667669083
1999	53.71856064452795
2000	51.84420569716546
2001	49.95194748676289
2002	48.08004041557757
2003	46.27402514383124
2004	44.56395288662568
2005	42.97896509220395
2006	41.528134874683516
2007	40.19203443904419
2008	38.955262961023415
2009	37.81251142554203
2010	36.7621867702332
2011	35.925112604711856
2012	35.309732069505905
2013	34.79102259316321
2014	34.28692164254189
2015	33.751931674161725
2016	33.23255631528716
2017	32.74717317800089
2018	32.29384405099921
2019	31.88081983966282
2020	31.488741313130358
2021	31.10457575577634
2022	30.729464041903533
2023	30.350950201137465