Year	% of working-age population
1960	7.995292056714294
1961	8.19351862738891
1962	8.353495819249245
1963	8.535257164266234
1964	8.712979205340872
1965	8.882288520890718
1966	9.03707642480785
1967	9.17625208746274
1968	9.300220966975619
1969	9.404345390932434
1970	9.453924674904982
1971	9.531492440990293
1972	9.70908794034806
1973	9.900929798205366
1974	10.062110966215398
1975	10.239922838885986
1976	10.432249640070982
1977	10.58849486521181
1978	10.70200916648902
1979	10.769791080356256
1980	10.784371539585504
1981	10.738852681164095
1982	10.651112902304504
1983	10.543807590192097
1984	10.432009063816162
1985	10.332190781796966
1986	10.254993905843786
1987	10.204287545700584
1988	10.183755993638087
1989	10.173941772107877
1990	10.128055214898895
1991	10.032987458067973
1992	9.910438039407262
1993	9.769791661190522
1994	9.616517975084845
1995	9.455793991416309
1996	9.298704740451187
1997	9.151332277310885
1998	9.004897987948835
1999	8.8525942493643
2000	8.859817541205347
2001	9.032663966902001
2002	9.225132143367349
2003	9.428637814987482
2004	9.621328789715697
2005	9.791214664170255
2006	9.932210742307864
2007	10.045403521704895
2008	10.134394214325809
2009	10.204873827121999
2010	9.962134955855127
2011	9.463090290895353
2012	9.026133169749109
2013	8.648776355747124
2014	8.338217063000112
2015	8.07526763050436
2016	7.89890399019032
2017	7.8424174713377495
2018	7.847258393381093
2019	7.884766068004207
2020	7.9426508006643
2021	8.007339706762192
2022	8.130527012443727
2023	8.366502789646741