Year	% of working-age population
1960	18.572734346082083
1961	19.03393255069093
1962	19.455614563828053
1963	19.819451537789014
1964	20.275070975758382
1965	20.740851163499165
1966	21.197562847863505
1967	21.668243081934456
1968	22.104086382060245
1969	22.50304330561921
1970	22.82536119828878
1971	23.081526790124688
1972	23.277985337550515
1973	23.440407846699525
1974	23.683468845310983
1975	23.982697839595495
1976	24.132972318285447
1977	24.209653459708925
1978	24.27137882099341
1979	24.256862355154666
1980	23.96271981591011
1981	23.23050294240504
1982	22.36520262481655
1983	21.546682083818844
1984	21.02513648514233
1985	20.967344812212023
1986	21.15888642268852
1987	21.456943490714533
1988	21.771673956944475
1989	21.999120524639686
1990	22.126309650498865
1991	22.157408327536523
1992	22.12945287955985
1993	22.17426897616718
1994	22.33541572865076
1995	22.540325719822423
1996	22.698665935117756
1997	22.80278075714262
1998	22.866948874061126
1999	22.861413776841736
2000	22.820381655209275
2001	22.78444418420843
2002	22.712546183919894
2003	22.676916385927345
2004	23.08163111924135
2005	23.88080920828413
2006	24.650615615250135
2007	25.196199769831328
2008	25.572686542235733
2009	25.950799927521555
2010	26.111662969871936
2011	26.190875129916453
2012	26.53160923525169
2013	26.956261737150772
2014	27.28499720711267
2015	27.42756937749814
2016	27.52965442589696
2017	27.762736547271444
2018	28.06245902091713
2019	28.404468462281823
2020	28.81895757313899
2021	29.379140722512048
2022	30.095063203225468
2023	30.89116043284567