Year	% of working-age population
1960	2.15247882238578
1961	2.2440711912239975
1962	2.318175744889324
1963	2.3935188201820115
1964	2.4714104193138504
1965	2.5487597830137894
1966	2.629012596505486
1967	2.7100542010840214
1968	2.7750931934281375
1969	2.8092838660726445
1970	2.852666373693563
1971	2.911300393267851
1972	2.983425414364641
1973	3.0768419757859036
1974	3.1930111372228467
1975	3.3435152315693886
1976	3.509981560169967
1977	3.6911652287867205
1978	3.877358777234191
1979	4.086378245478917
1980	4.273528944823704
1981	4.396529941884949
1982	4.5022565822664
1983	4.5935040021168225
1984	4.697195015640224
1985	4.816271825864658
1986	4.922684750979968
1987	5.032283676019008
1988	5.1818006160421
1989	5.415663252283346
1990	5.7360959651035985
1991	6.083068469536174
1992	6.410556809951859
1993	6.683856030309408
1994	6.907662245873696
1995	7.107968887885567
1996	7.296289541410824
1997	7.463030036219559
1998	7.623987354277811
1999	7.791295524834389
2000	8.00923733972346
2001	8.28609856854645
2002	8.575663399474061
2003	8.858410111931775
2004	9.108552818434855
2005	9.304251275006116
2006	9.440065819613123
2007	9.518193131373168
2008	9.582468281430218
2009	9.694650183099755
2010	10.054198557146519
2011	10.68291923474948
2012	11.397571355198474
2013	12.163367383529023
2014	12.973760932944606
2015	13.796490187721217
2016	14.614546571936717
2017	15.432509105208462
2018	16.257605153609976
2019	17.104215634240656
2020	17.821632022445286
2021	18.40337638602342
2022	19.066009261168706
2023	19.81980299705896