Year	% of working-age population
1960	4.413743741915281
1961	4.307535270314608
1962	4.242236290529558
1963	4.217048310527786
1964	4.216457587537995
1965	4.2492765508363775
1966	4.3220139310614885
1967	4.415275635420453
1968	4.5118465041910945
1969	4.591300693422988
1970	4.645095745915081
1971	4.674693887627136
1972	4.681986035969062
1973	4.6788317684534535
1974	4.671358603942874
1975	4.576698910710811
1976	4.3994981495697605
1977	4.224112394735728
1978	4.042825006248785
1979	3.8587063479915154
1980	3.739138845453226
1981	3.7595957401141025
1982	3.8578733446964733
1983	3.945196819384242
1984	4.012917841810134
1985	4.056845264365787
1986	4.070642747472335
1987	4.057615434918356
1988	4.0220685897217585
1989	3.967822876809783
1990	3.9075346922358007
1991	3.950016107269748
1992	4.103401083760241
1993	4.280721522930064
1994	4.482389397795896
1995	4.701465053401241
1996	4.930842923366362
1997	5.1636441866744525
1998	5.387128736484479
1999	5.582116663239427
2000	5.757489856274302
2001	5.932100927223001
2002	6.107715884123262
2003	6.30242090173037
2004	6.5297912187001454
2005	6.788233496509853
2006	7.0870604006122715
2007	7.432743465080153
2008	7.839953651218265
2009	8.34446405779945
2010	8.878667372121999
2011	9.265790798382499
2012	9.506741903460556
2013	9.696845134107491
2014	9.85000937057394
2015	9.885698480215895
2016	9.806391232282415
2017	9.69536995864487
2018	9.547038423961629
2019	9.36729840258174
2020	9.154329548523085
2021	8.89489381598678
2022	8.665654924919746
2023	8.50002000118795