Year	% of working-age population
1960	9.185910179945965
1961	9.152508090614887
1962	9.175299004153532
1963	9.236898104617213
1964	9.334407656997753
1965	9.455174401844912
1966	9.609659278862058
1967	9.796763091805413
1968	10.004578754578755
1969	10.218468468468469
1970	10.450570131739179
1971	10.688169234787152
1972	10.90846892305061
1973	11.110878002727368
1974	11.299307282780735
1975	11.472771530306384
1976	11.63889873567293
1977	11.805461738878703
1978	11.964904966743099
1979	12.114825039170334
1980	12.25284821756707
1981	12.294387892982614
1982	12.230849134667864
1983	12.14442201866515
1984	12.049765242300456
1985	11.950242110535983
1986	11.840825544401035
1987	11.737372419865002
1988	11.659185584654633
1989	11.587014607766276
1990	11.501982553528945
1991	11.478699885542264
1992	11.538937532873364
1993	11.600647961366832
1994	11.627098665618908
1995	11.637679642285663
1996	11.621641625342313
1997	11.571277781035596
1998	11.52024179720422
1999	11.484674605691877
2000	11.46592585167471
2001	11.469738172188448
2002	11.54276646689619
2003	11.673585811516846
2004	11.825214536333789
2005	11.993022241604885
2006	12.15755107772239
2007	12.320038093104028
2008	12.496335283195354
2009	12.691627563736615
2010	12.900668882368482
2011	13.141529514879172
2012	13.405812251724857
2013	13.678559445252208
2014	13.960237788121809
2015	14.264030020660288
2016	14.610609480812641
2017	14.959103387767808
2018	15.304675759208324
2019	15.644865395281368
2020	15.92114266164899
2021	16.07900261342702
2022	16.147406082289802
2023	16.29878965838287