Year	% of working-age population
1960	69.43348172214118
1961	69.94246073060565
1962	70.3742278862209
1963	70.85219656567024
1964	71.28804993614428
1965	71.67850046078442
1966	72.03648859828418
1967	72.37450249366982
1968	72.73118631621651
1969	73.0687856338938
1970	73.39536283106783
1971	73.76609917136192
1972	74.18600989787994
1973	74.57390202523649
1974	74.8833452164125
1975	75.18092598014562
1976	75.51227975399806
1977	75.82000601737111
1978	76.0568282233628
1979	76.30427663761682
1980	76.51629470516279
1981	76.6795004684751
1982	76.87501014960786
1983	77.08998680158318
1984	77.31251815931353
1985	77.50597896159063
1986	77.66318792182301
1987	77.80879258007673
1988	77.9137039380582
1989	77.95815906143787
1990	78.03270963062931
1991	77.942234313553
1992	77.86143901961006
1993	77.85242147717527
1994	77.59691151210795
1995	77.21713796299838
1996	77.05632686053661
1997	76.89686353604365
1998	76.57340867992988
1999	76.17661526594905
2000	75.79748718979063
2001	75.4392029125183
2002	75.18651649764885
2003	75.00861837052283
2004	74.7969450916886
2005	74.5606874932277
2006	74.2976049317661
2007	74.08054680662204
2008	73.93596706494525
2009	73.79441872064454
2010	73.64701297580699
2011	73.53272268921724
2012	73.47100184861516
2013	73.4423391730758
2014	73.38783049631093
2015	73.25339525763808
2016	73.0267703891235
2017	72.73094817720718
2018	72.39243185470433
2019	71.97475283593944
2020	71.46446107182585
2021	70.91881727804778
2022	70.68648154066562
2023	70.0095286210224