Year	% of working-age population
1960	44.95453016075048
1961	46.17224299777702
1962	46.99660539650164
1963	47.454565710632274
1964	47.64271704197865
1965	47.56525607068481
1966	47.95628324101307
1967	48.93060542342545
1968	49.703523501468595
1969	50.08557254455719
1970	49.61244241080554
1971	48.53918037348504
1972	47.445350362050284
1973	46.33383933768959
1974	45.17929473740874
1975	44.00075764213334
1976	42.87409039544375
1977	41.80847177561519
1978	40.82290961326818
1979	39.989247070172375
1980	39.37648735119657
1981	38.962750155292085
1982	38.662774981528294
1983	38.40445226168123
1984	38.19207017734041
1985	38.03610752991288
1986	37.891048777559924
1987	37.75827866988012
1988	37.61977808377047
1989	37.549072263405144
1990	37.72100101826744
1991	38.04476116735254
1992	38.33475571564022
1993	38.57304275823365
1994	38.69932352493519
1995	38.65160789435979
1996	38.4465040057132
1997	38.104641943537366
1998	37.59803993378551
1999	36.88444530270823
2000	36.01026202709121
2001	35.03826856726026
2002	34.00018584730369
2003	32.97258358733245
2004	31.955768512185667
2005	30.87469381563148
2006	29.78856267501878
2007	28.855490302360298
2008	28.166932325277777
2009	27.766544859575156
2010	27.568539245418656
2011	27.50051300205671
2012	27.57364492119868
2013	27.789509306260573
2014	28.302205607955628
2015	29.070934179427194
2016	29.87652288709552
2017	30.63672179796605
2018	31.33104502733346
2019	31.91741419818339
2020	32.368178201936075
2021	32.781146564501014
2022	33.15929678593841
2023	33.35381200743554