Year	% of working-age population
1960	20.739409931785644
1961	20.54331966928368
1962	20.501424187800147
1963	20.50531589049674
1964	20.54543741334518
1965	20.676701745037963
1966	20.842457982638983
1967	20.99711114887387
1968	21.179155375179906
1969	21.380375997939737
1970	21.611796630996878
1971	21.826830136846926
1972	21.94663944446545
1973	21.99852994306644
1974	22.00742762979906
1975	21.9722784764076
1976	22.06457808186292
1977	22.32121530597621
1978	22.56005515208425
1979	22.667674643861183
1980	22.62482703628134
1981	22.41369313371911
1982	22.07523911703609
1983	21.72005117730242
1984	21.46171181123238
1985	21.35003918836541
1986	21.267114093959734
1987	21.178291614982562
1988	21.127262064343164
1989	21.07399507113716
1990	21.007740017427853
1991	20.988800261123238
1992	21.01530612244898
1993	21.036339303045473
1994	21.04875579147617
1995	21.06793036037788
1996	21.078190815032922
1997	21.056439204817558
1998	21.0535395356389
1999	21.099489667020364
2000	21.156168243107267
2001	21.257233245900327
2002	21.401722320558463
2003	21.54409370343691
2004	21.71117656844804
2005	21.851639987977624
2006	21.873860736419978
2007	21.827290755377593
2008	21.872710536697163
2009	22.03803159060659
2010	22.20827526373596
2011	22.6482791613384
2012	23.337963516608866
2013	23.851975371985635
2014	24.277113928669163
2015	24.65132306799427
2016	25.09993157837877
2017	25.376415187068297
2018	25.012551195666532
2019	24.33256263043497
2020	23.8319434000957
2021	23.68921534651373
2022	23.901317831408175
2023	24.368338021585437