Year	% of working-age population
1960	9.227309554273347
1961	9.133173806192161
1962	8.980802827258334
1963	8.837777289455305
1964	8.733604713634852
1965	8.676232581879164
1966	8.673249902229173
1967	8.723506360063544
1968	8.801935509887478
1969	8.88282927489606
1970	8.96022864888224
1971	9.040514145313798
1972	9.110310857550115
1973	9.162507981996862
1974	9.224093260909354
1975	9.297966146647655
1976	9.380484806079291
1977	9.477677401523648
1978	9.569343728502313
1979	9.608006470154566
1980	9.565311893881454
1981	9.457406899075853
1982	9.298303412341555
1983	9.110952158490628
1984	8.938061395814586
1985	8.807864702301814
1986	8.66039338023533
1987	8.490052271907304
1988	8.385750617539543
1989	8.450300577355316
1990	8.646098313129734
1991	8.88414821238962
1992	9.169379828806658
1993	9.483727493917275
1994	9.789767903876513
1995	10.011057482483418
1996	10.12399190603443
1997	10.142528665917466
1998	10.072374043904858
1999	10.00886984446735
2000	10.033334410788507
2001	10.17723095360872
2002	10.423637931226178
2003	10.698138021291642
2004	10.935172292369774
2005	11.085070247069186
2006	11.107271301448014
2007	10.949897725191246
2008	10.634255430827512
2009	10.242570679574396
2010	9.909870714365287
2011	9.755345275759499
2012	9.793177103693923
2013	9.97699885364622
2014	10.252077845022159
2015	10.590477993328575
2016	10.948761255204019
2017	11.314871125184114
2018	11.701165354352247
2019	12.10748248736251
2020	12.468400061053595
2021	12.715937193151753
2022	12.912252960548907
2023	13.174710989690078