Year	% of working-age population
1960	9.244411415089404
1961	10.115284094856843
1962	11.038317367030128
1963	11.497714092419715
1964	11.498776173878447
1965	11.574694172950705
1966	11.702049997877848
1967	11.837215230633
1968	11.953334467702687
1969	11.874378548548515
1970	11.60948491359887
1971	11.347059693946756
1972	11.105561405245522
1973	10.879341731595426
1974	10.667547116034479
1975	10.463182622432427
1976	10.249558827402744
1977	10.00753095246864
1978	9.73991406750021
1979	9.497149308228982
1980	9.273107679376166
1981	9.035435225592883
1982	8.784180398810596
1983	8.527796522190501
1984	8.300133069475955
1985	8.099835384678473
1986	7.896452148341279
1987	7.677286430220404
1988	7.440890559346689
1989	7.210266651411612
1990	6.996931466607012
1991	6.787965337909317
1992	6.574992220557617
1993	6.3656053934777965
1994	6.186553042591472
1995	6.055974483580291
1996	5.957417958931352
1997	5.863103665447253
1998	5.7654314097555535
1999	5.659931103958864
2000	5.579736110991076
2001	5.531687193745741
2002	5.48736940810972
2003	5.452407975450678
2004	5.449882222230238
2005	5.4910065914422965
2006	5.543572119469542
2007	5.579816640586315
2008	5.596017990469069
2009	5.597220930213357
2010	5.590652019062388
2011	5.579182499990633
2012	5.575449294490596
2013	5.599681690072164
2014	5.646454776976924
2015	5.740724955728646
2016	5.853349786713596
2017	5.989100077083089
2018	6.186817019750893
2019	6.429484220078063
2020	6.705125540753268
2021	6.997163842492035
2022	7.327317918345301
2023	7.70639536224398