Year	% of working-age population
1960	76.39292987414974
1961	80.20430814399911
1962	84.0450237425766
1963	87.59576924015803
1964	90.97170929156468
1965	94.49296936498762
1966	97.91129408768728
1967	100.9480572624574
1968	103.26235815564759
1969	104.35218443221603
1970	104.57991610496839
1971	104.65923523681518
1972	104.56440808637142
1973	104.22471419209205
1974	103.62225900167765
1975	102.67599043431642
1976	101.37000553111912
1977	99.70561976690877
1978	97.74362940599863
1979	95.72809549226983
1980	93.89505469279983
1981	92.29831973190011
1982	90.85719855694663
1983	89.5431092655074
1984	88.39618064433006
1985	87.43739052495299
1986	86.63094308733581
1987	85.85303335788079
1988	84.96284727827661
1989	83.82565553394423
1990	82.46022935915347
1991	80.98364458688638
1992	79.36779599575259
1993	77.58545031300036
1994	75.68087043939511
1995	73.74293012360074
1996	71.82654007429915
1997	69.87908324946737
1998	67.78853666703874
1999	65.52553338540751
2000	62.943119666159866
2001	60.17865425627019
2002	57.522755903274394
2003	54.96999999384173
2004	52.585038676079265
2005	50.483333235333895
2006	48.791735310427356
2007	47.62364749486986
2008	46.97538028860641
2009	46.78698954105827
2010	46.83754210172004
2011	46.87925385366021
2012	47.06649131852917
2013	47.59459682385208
2014	48.41911025963926
2015	49.53398441184289
2016	50.86693976090808
2017	52.395630186249676
2018	54.1329073718998
2019	55.93619432307775
2020	57.38685088706229
2021	58.352852807398605
2022	58.92134053811387
2023	58.98044080819448
