Year	% of working-age population
1960	15.705780448456377
1961	15.845292368750435
1962	15.94380890706642
1963	16.039441282253446
1964	16.236966616286125
1965	16.50462093815255
1966	16.795535230759974
1967	17.118514894521102
1968	17.466697015869496
1969	17.80735205174729
1970	18.12562574842858
1971	18.45411050597864
1972	18.754250137263693
1973	18.97998229140259
1974	19.161615905459893
1975	19.288287686306628
1976	19.366212176697527
1977	19.431183452214228
1978	19.457189778372193
1979	19.384977627893722
1980	19.161889007565907
1981	18.78314722650819
1982	18.342941817942524
1983	17.94797632244487
1984	17.6198027666856
1985	17.359459995344785
1986	17.258383374036843
1987	17.344943266133413
1988	17.551338758031903
1989	17.84781537519781
1990	18.183256889001026
1991	18.583173409945154
1992	19.082921328973278
1993	19.57925562609898
1994	19.972075349674203
1995	20.33313473424884
1996	20.776396713167383
1997	21.25809886346311
1998	21.673838057189634
1999	22.063196410484874
2000	22.52991693562118
2001	23.071166701652093
2002	23.674940361603745
2003	24.337645658640746
2004	25.010081847007402
2005	25.61967419907657
2006	26.16067743485552
2007	26.617341384743238
2008	27.005039044272817
2009	27.368718496386823
2010	27.676300020496498
2011	28.06013855479789
2012	28.591634703520118
2013	29.240150065586
2014	29.974623329394696
2015	30.65802460500649
2016	31.31069322716718
2017	31.975470449537102
2018	32.56014676078334
2019	33.239996930953886
2020	33.99569514972938
2021	34.441324414613916
2022	34.92273344057242
2023	35.68645808552492