Year	% of working-age population
1960	4.354985046540542
1961	4.50994551303092
1962	4.692954104718811
1963	4.8720723014256615
1964	5.043227665706052
1965	5.22243117427629
1966	5.429109007040544
1967	5.685358255451713
1968	6.011042507717882
1969	6.381221986317527
1970	6.777572396796057
1971	7.205469845722299
1972	7.57593255572237
1973	7.871415669451344
1974	8.14340307370852
1975	8.394942676524161
1976	8.670489957315317
1977	8.95253766647812
1978	9.20093173992303
1979	9.388826396700413
1980	9.557877017526488
1981	9.868097253666699
1982	10.20288581264191
1983	10.369208494208495
1984	10.432478877273379
1985	10.409036130343345
1986	10.34660542288674
1987	10.3362303982105
1988	10.352269562795877
1989	10.293981908805613
1990	10.12984642066589
1991	9.909506316638295
1992	9.703925916264511
1993	9.568778204913924
1994	9.505299645354546
1995	9.478636581853097
1996	9.465058466071264
1997	9.50896336710834
1998	9.605524030901758
1999	9.727665062751129
2000	9.909185887647673
2001	10.217942858943852
2002	10.598497924149834
2003	10.970755920274154
2004	11.364258139040034
2005	11.775678440339371
2006	12.163913425588012
2007	12.536327024355703
2008	12.92462340926026
2009	13.349830685074238
2010	13.798136779289916
2011	14.299859957845898
2012	14.891708137660334
2013	15.554627115103406
2014	16.27913425675582
2015	17.0831892676855
2016	17.964692231185765
2017	18.90440090034108
2018	19.9201591292096
2019	20.9963920874746
2020	22.060107245292432
2021	22.97447280799112
2022	23.872177839527613
2023	24.996860392102143