Year	% of working-age population
1960	71.90355992688659
1961	72.4336377150138
1962	72.8604887350509
1963	73.24681100531669
1964	73.60829211579009
1965	73.94814231072327
1966	74.31346594828389
1967	74.65115016379201
1968	74.8528248835779
1969	74.71525047878238
1970	74.97266052179347
1971	75.7597949469059
1972	76.44991212653778
1973	76.98749380199438
1974	77.28097003816278
1975	77.29073003639478
1976	76.94908092119164
1977	76.39886897195777
1978	75.75831170989224
1979	74.95105160108633
1980	73.98163906729444
1981	72.87556352707354
1982	71.63590100012958
1983	70.25612841914838
1984	68.75688548123254
1985	67.05604949488394
1986	65.30687285945412
1987	63.70433079700536
1988	62.20957893902149
1989	60.771601965128596
1990	59.386512222191136
1991	58.18614804524708
1992	57.223305555312656
1993	56.444022352053324
1994	55.80607495847517
1995	55.25649652343875
1996	54.78020385299395
1997	54.62529363897376
1998	54.71153483815051
1999	54.763542753156834
2000	54.808404361904486
2001	54.72454399179826
2002	54.42591404746633
2003	54.00363656249145
2004	53.536885768556985
2005	53.01011937702585
2006	52.34445679427198
2007	51.685179549604385
2008	51.19900342572408
2009	50.75638699553768
2010	50.26533338146637
2011	49.82769894145299
2012	49.51479850138835
2013	49.299794440260264
2014	49.174680557410625
2015	49.11843809144337
2016	49.0740076683309
2017	49.06261696646778
2018	49.12123445112898
2019	49.28724750949419
2020	49.50254243831416
2021	49.63999712219068
2022	49.77301555511049
2023	49.99888035470363