Year	% of working-age population
1960	75.62189054726367
1961	77.01621177919147
1962	78.6961819658814
1963	80.5304400241109
1964	82.2372342539241
1965	83.35943617854346
1966	84.1385948026949
1967	84.53257790368272
1968	84.69652109548483
1969	84.60562103354488
1970	83.02345786272807
1971	80.0161943319838
1972	76.7406962785114
1973	73.57700892857143
1974	70.34151408907934
1975	67.23657087425731
1976	64.38480782351603
1977	61.748341536486194
1978	59.21132457027301
1979	56.757274119448695
1980	54.70417948254026
1981	52.98188653451812
1982	51.235465116279066
1983	49.52635599694423
1984	47.89721317408614
1985	46.39054880142867
1986	44.95167189132707
1987	43.59054138145613
1988	42.406229566664685
1989	41.323111868256674
1990	40.14107258238208
1991	38.87336821252603
1992	37.724522140044186
1993	36.791292863973766
1994	36.04988524661153
1995	35.4391180478137
1996	34.923453282828284
1997	34.495142327902315
1998	34.1222593291709
1999	33.77113315635042
2000	33.659128441912976
2001	33.639322916666664
2002	33.45487693710118
2003	33.205782312925166
2004	32.90485414098726
2005	32.54382481420548
2006	32.15196817994788
2007	31.77004538577912
2008	31.39376493870313
2009	31.111665004985046
2010	31.01785671019795
2011	31.04661597317338
2012	31.06818496150477
2013	31.01298584385479
2014	30.982384376855578
2015	31.07596298687325
2016	31.25105414066453
2017	31.509059319930504
2018	31.813103098019297
2019	32.101552044424025
2020	32.306633906633905
2021	32.642890515496035
2022	33.2027917797596
2023	33.77468105228619