Year	% of working-age population
1960	69.12635549034654
1961	68.77130137632645
1962	68.9278762037006
1963	70.10985307221267
1964	71.05280086200004
1965	71.26168321596771
1966	71.17429242703636
1967	70.56964662151623
1968	69.93156195480765
1969	69.48420499464622
1970	68.84972917680554
1971	68.27484468488636
1972	67.48869278417659
1973	66.70049979791845
1974	66.39114465831233
1975	66.19761630600173
1976	65.9267239414455
1977	64.78656537094388
1978	62.317462459796545
1979	59.84802489470751
1980	57.86224187057224
1981	56.113413212864494
1982	54.74862383115677
1983	53.24762922502584
1984	51.535080000229776
1985	49.99375699917064
1986	48.69945198948921
1987	47.74329874554982
1988	46.92247147115666
1989	46.24930360301113
1990	45.87570119372603
1991	45.49812874892895
1992	44.98234518139267
1993	44.44300315595012
1994	43.77062356390758
1995	42.943633045792424
1996	41.96512196183585
1997	40.78142763882056
1998	39.600241850602494
1999	38.47955354535023
2000	37.295524858276586
2001	35.99318613604145
2002	34.544763759425706
2003	33.15534873121714
2004	31.86857773002659
2005	30.574687250912728
2006	29.52606851059127
2007	28.82571186490852
2008	28.29649042244084
2009	27.897466614081704
2010	27.58551433089634
2011	27.36022068259218
2012	27.27879649045508
2013	27.29042335321243
2014	27.35338243552795
2015	27.412935578590552
2016	27.479338832647546
2017	27.625780843763742
2018	27.70251404578936
2019	27.65022691268618
2020	27.480672354174146
2021	27.16757054164024
2022	26.756778307639518
2023	26.28067263484229