Year	% of working-age population
1960	77.22504340791578
1961	77.94011406961737
1962	78.78993128239583
1963	79.85523142486569
1964	81.10403655397495
1965	82.1860915163765
1966	83.06098965047946
1967	83.8826024346977
1968	84.6257977376219
1969	85.38926342420694
1970	85.97785025082482
1971	86.81193525954444
1972	87.7872837277946
1973	88.29717209541637
1974	88.58035926142713
1975	88.40319137157334
1976	87.93895305995734
1977	87.61954822759989
1978	87.45508785623343
1979	87.45188691425938
1980	87.57306301163665
1981	87.67632893123707
1982	87.60917257830778
1983	87.28688466138178
1984	86.73303752005353
1985	85.99956101295298
1986	85.07150062601069
1987	83.90332996258863
1988	82.60038092917016
1989	81.31368743009006
1990	80.00054624077897
1991	78.47866940019827
1992	76.81839394675303
1993	75.14876593689864
1994	73.43179380645545
1995	71.66594108783177
1996	69.86179007776524
1997	68.0818242624396
1998	66.39522840374089
1999	64.80274785659465
2000	63.30982520723073
2001	62.04660500740224
2002	60.98153434139426
2003	59.997685341500386
2004	59.01743682535019
2005	58.02951007390834
2006	57.19709635695541
2007	56.4437532165148
2008	55.73343361189733
2009	54.87158993220053
2010	53.6937479646417
2011	52.38234219544403
2012	50.93761805364733
2013	49.42052049778743
2014	47.925873052663114
2015	46.46958305765958
2016	45.031958962123916
2017	43.61987640180364
2018	42.309648609490296
2019	41.130014125108936
2020	40.04190136553852
2021	39.0623470441182
2022	38.1975653230749
2023	37.428815068668555