Year	% of working-age population
1960	2.2438369909681963
1961	2.358629462877081
1962	2.4728256917010953
1963	2.5886659544144592
1964	2.706345515852895
1965	2.8096257528548296
1966	2.8947895242744
1967	2.9719394954188854
1968	3.041606978322349
1969	3.1061610849709385
1970	3.1661194106826662
1971	3.2202582899421643
1972	3.2704577830574726
1973	3.3200196361954237
1974	3.3702322182210565
1975	3.4232787549746515
1976	3.4772265867629804
1977	3.531152686535887
1978	3.5875676794291054
1979	3.646096463174308
1980	3.7051838555213568
1981	3.7645968592266468
1982	3.823650079208929
1983	3.88120809058091
1984	3.934977816010611
1985	3.9832469754150877
1986	4.027661735096792
1987	4.070319964878754
1988	4.111334570595559
1989	4.148270617728729
1990	4.181623587132121
1991	4.210672712924239
1992	4.234124622996378
1993	4.254621665805862
1994	4.2748600417273055
1995	4.29483402317352
1996	4.3164538487912
1997	4.343114072130206
1998	4.372396428434866
1999	4.401043989893065
2000	4.429526888200037
2001	4.459324758311797
2002	4.491247196481402
2003	4.526879525804701
2004	4.569743584803883
2005	4.618914261471495
2006	4.671716207975969
2007	4.7290726840371295
2008	4.7906644494681165
2009	4.85349183296807
2010	4.912655768470165
2011	4.960540705424726
2012	4.984401699172142
2013	4.970253342166189
2014	4.91983317072079
2015	4.902188145260388
2016	4.929191726638195
2017	4.958243512141677
2018	4.987540590235573
2019	5.015445426175482
2020	5.00990445836721
2021	4.970315691095749
2022	4.930824798944065
2023	4.909583185163025