Year	% of working-age population
1960	65.20411137726069
1961	63.07443059530286
1962	61.33380552911751
1963	59.958215098693444
1964	58.921344791431906
1965	58.208498646594244
1966	57.82777401388437
1967	57.7516359584077
1968	56.01525799820407
1969	52.322946002578
1970	48.53956586886972
1971	45.31536628435256
1972	42.75385901200417
1973	40.78966567123528
1974	39.371794760920515
1975	38.43566894848014
1976	37.52847315485976
1977	36.88546053421693
1978	36.9114936100582
1979	37.44923312883436
1980	38.22873900293255
1981	39.60170145455619
1982	41.359215452845234
1983	42.86423473619044
1984	44.16824426323453
1985	45.2244426741417
1986	46.05466974053197
1987	46.23023170283192
1988	45.52579157055987
1989	44.30642361181763
1990	42.83722021904702
1991	41.29917579781279
1992	39.799726632994116
1993	38.37297914507902
1994	36.988884141823306
1995	35.593997724159586
1996	34.626328801903476
1997	33.677181155605886
1998	32.16814579626375
1999	30.467222741514462
2000	28.825422074687744
2001	27.40019648120032
2002	26.251729324257017
2003	25.354601170040464
2004	24.635046202041444
2005	23.689024914008048
2006	21.737083096805815
2007	19.28680398044297
2008	17.327930929128797
2009	16.103131048769068
2010	15.967565734434691
2011	16.427560815432095
2012	16.69529004649554
2013	16.81330945869467
2014	16.839429145933885
2015	16.84292000111344
2016	16.888390456819717
2017	17.01803298647728
2018	17.24534940360454
2019	17.552805276680974
2020	17.91376191298113
2021	18.222980352851984
2022	18.365522539936823
2023	18.35113332544269