Year	% of working-age population
1960	7.124153911328805
1961	6.9183232035366675
1962	6.811915946330944
1963	6.75691948894592
1964	6.691654035868498
1965	6.63743567066988
1966	6.621964760480312
1967	6.621186564964024
1968	6.6391462871194555
1969	6.672954367505232
1970	6.701993032116474
1971	6.7451941818676735
1972	6.780436505476602
1973	6.834829199915175
1974	6.9560458385460935
1975	7.09805446155274
1976	7.224657882061404
1977	7.294943290922916
1978	7.303955409102797
1979	7.333185241142657
1980	7.379242300155174
1981	7.4164706900113275
1982	7.463516494318433
1983	7.488466761826669
1984	7.501029285942068
1985	7.540722021754337
1986	7.597524326145988
1987	7.6646286492326245
1988	7.751215852604417
1989	7.882368728469942
1990	8.0461130673414
1991	8.196112599333116
1992	8.359482197660462
1993	8.570796044824872
1994	8.783930581205691
1995	8.995940179346682
1996	9.198011197999003
1997	9.383089120778612
1998	9.614911350075884
1999	9.868243804344894
2000	10.096406056056036
2001	10.306146578630294
2002	10.484508441105408
2003	10.64155384323428
2004	10.768450509386009
2005	10.879833471132711
2006	11.036206662277154
2007	11.219676435747687
2008	11.394440491489895
2009	11.58567138235076
2010	11.815002795038659
2011	12.102302658454299
2012	12.456975384207459
2013	12.881930702859016
2014	13.378317113445362
2015	13.989920592548874
2016	14.687399628380016
2017	15.494007294240241
2018	16.369816309205003
2019	17.244321857089577
2020	18.15923341112138
2021	19.007429792135383
2022	19.878504395362718
2023	20.692610133693208