Year	% of working-age population
1960	15.711305291520095
1961	16.024011530012082
1962	16.274998378984225
1963	16.514095208273854
1964	16.865456376914448
1965	17.241567713265827
1966	17.619259676642464
1967	18.04739112235427
1968	18.428298992767772
1969	18.75989170706489
1970	19.128019869044934
1971	19.32470686991543
1972	19.3928588680107
1973	19.564295236940975
1974	19.728627497773367
1975	19.82833952308132
1976	19.826513325757862
1977	19.84607427330092
1978	19.918560270752103
1979	20.016534472738584
1980	20.050491521158545
1981	19.856672071977822
1982	19.571975418155084
1983	19.219220410381308
1984	18.94670095743717
1985	18.946621894309548
1986	19.017454242474972
1987	19.007268132657913
1988	19.02849243529683
1989	19.078500895954857
1990	19.15377409802381
1991	19.33419652279344
1992	19.545606291034535
1993	19.771842143006875
1994	20.05272523080962
1995	20.352096396682754
1996	20.640490472766814
1997	20.82450558716617
1998	20.900572983511818
1999	20.957411412410583
2000	20.762559900538633
2001	20.598858482873876
2002	20.723701766558147
2003	20.72812258266265
2004	20.73470313715323
2005	20.76840947843131
2006	20.702626242395414
2007	20.622327688756236
2008	20.533991541622143
2009	20.468926753393664
2010	20.362712529125428
2011	20.21010561413652
2012	20.14135239862468
2013	20.223824349553762
2014	20.371679575817435
2015	20.46295052381037
2016	20.481015289732763
2017	20.531179611346108
2018	20.635258502436024
2019	20.774084297942423
2020	20.958677308487196
2021	21.264543922420398
2022	21.726484299254917
2023	22.26552926044737