Year	% of working-age population
1960	42.62522424299864
1961	42.65842298419901
1962	42.802401393942304
1963	42.779707674969245
1964	42.866934147814185
1965	43.23387623686592
1966	43.650039231362555
1967	43.972487439202176
1968	44.19984669792802
1969	44.439931159064336
1970	44.624308226742556
1971	44.69238576366874
1972	44.62056145329733
1973	44.441816493190494
1974	44.17119322075078
1975	43.85785571269782
1976	43.61780986523567
1977	43.33871898097196
1978	42.86607088034722
1979	42.14306927774692
1980	41.29153576503898
1981	40.318094930313855
1982	39.240411309759715
1983	38.18577271363217
1984	37.118007688845914
1985	36.02630561257981
1986	34.898038795570315
1987	33.71789034939871
1988	32.50760757330114
1989	31.25140638729396
1990	29.921099399548908
1991	28.611385029272522
1992	27.423675082020726
1993	26.317089221661632
1994	25.262390129145817
1995	24.307016249045056
1996	23.4709913874482
1997	22.761532068867524
1998	22.184479222969447
1999	21.7301686035766
2000	21.410682198937998
2001	21.236097789090508
2002	21.143808870874214
2003	21.092960509839916
2004	21.02346821854717
2005	21.010043493842826
2006	21.10277500315928
2007	21.189722389891415
2008	21.3795974732775
2009	21.68735895221551
2010	21.994525704784287
2011	22.26569476806889
2012	22.491080632151824
2013	22.694384027506086
2014	22.836577033715706
2015	22.874811295812517
2016	22.84373643974184
2017	22.767612431459238
2018	22.57155121438057
2019	22.238239373282358
2020	21.834108594252736
2021	21.377280377171076
2022	20.925812840837533
2023	20.46363363230617