Year	% of working-age population
1960	63.31634716621307
1961	63.34210474650419
1962	63.013408012149974
1963	62.62466405754329
1964	62.25319664369666
1965	61.7992163791728
1966	61.2963960756148
1967	60.705945711382256
1968	60.07716335108725
1969	59.59302022925799
1970	59.22753955321824
1971	58.87384149629513
1972	58.52020540138021
1973	58.05398453149988
1974	57.433396254684396
1975	56.75140659357769
1976	56.01446143881288
1977	55.25855768169392
1978	54.57405903398003
1979	53.99460753658937
1980	53.53746472985683
1981	53.13906022910224
1982	52.71671209003059
1983	52.226766129381566
1984	51.681358167859024
1985	51.11029608533677
1986	50.53633388225549
1987	50.039013764506315
1988	49.70333100190125
1989	49.515580260199044
1990	49.49637663448292
1991	49.64603297712388
1992	49.846151366548455
1993	50.028491686365825
1994	50.146723341731935
1995	50.17038048527912
1996	50.113008329504616
1997	49.99826577820232
1998	49.855351883663005
1999	49.67625763050183
2000	49.48967234718668
2001	49.30850691345906
2002	49.08604623170054
2003	48.86026882768685
2004	48.66810302359174
2005	48.494407994576235
2006	48.352315245893415
2007	48.24343853579403
2008	48.15918684380434
2009	48.19407613192791
2010	48.417631961458405
2011	48.828004044066894
2012	49.390235087173295
2013	49.984637166048046
2014	50.54840340635375
2015	51.11544751021121
2016	51.66474182757375
2017	52.13515529886866
2018	52.55292042965176
2019	52.92950290839686
2020	53.3162040546001
2021	53.71014185210778
2022	54.040796914115255
2023	54.354855597601784