Year	% of working-age population
1960	4.131288372726713
1961	4.192352559559451
1962	4.25986084768201
1963	4.327974265855485
1964	4.392583106977283
1965	4.459162563375039
1966	4.531789513198303
1967	4.6092315076551555
1968	4.691108354991693
1969	4.777897838899803
1970	4.871481154349777
1971	4.963449950846518
1972	5.060681237268729
1973	5.175784138952741
1974	5.285322231244503
1975	5.388572864363006
1976	5.494217596709323
1977	5.591146673697478
1978	5.67179944974116
1979	5.749053225090059
1980	5.8305944880149685
1981	5.896909459872045
1982	5.937324758908788
1983	5.95354655167483
1984	5.945245894266171
1985	5.93126111360322
1986	5.915189172518523
1987	5.883661048539642
1988	5.8430404946164405
1989	5.793023333957365
1990	5.7339532293960715
1991	5.6633291261472065
1992	5.578767352558067
1993	5.4850035702639035
1994	5.388899616186079
1995	5.315786317810927
1996	5.234030084578965
1997	5.132240828227272
1998	5.0159988490657375
1999	4.877546386696577
2000	4.733052990589164
2001	4.582762689514452
2002	4.423495166532759
2003	4.259135622912638
2004	4.09781987629302
2005	3.9394230993318935
2006	3.7851545629061407
2007	3.635942654175529
2008	3.4935832638128677
2009	3.366804971922086
2010	3.2601922109162187
2011	3.1749299712122694
2012	3.11603228609296
2013	3.089472989596882
2014	3.0953431294403897
2015	3.111744468247575
2016	3.12274214831357
2017	3.1321641476844304
2018	3.1430306045165493
2019	3.154825699952691
2020	3.1611381012252644
2021	3.1566626961095383
2022	3.1650215451657657
2023	3.192579244502579