Year	% of working-age population
1960	9.033833233921285
1961	8.936766109048374
1962	8.882154486574773
1963	8.798112184699768
1964	8.672442774232682
1965	8.570345297492143
1966	8.49277977366528
1967	8.421713375426604
1968	8.344339204733933
1969	8.280554849610201
1970	8.263356086551047
1971	8.33168935988462
1972	8.481820788181217
1973	8.69867977757152
1974	8.971526336838217
1975	9.262994119862782
1976	9.533571469109708
1977	9.76387986417846
1978	9.930549985570869
1979	10.013896352045247
1980	10.018883249863896
1981	9.987725755625826
1982	9.983541236886474
1983	10.015014877266374
1984	10.080703528022669
1985	10.190514655060246
1986	10.339329410665918
1987	10.523770254307173
1988	10.741734866691159
1989	10.9936081876423
1990	11.272831782559829
1991	11.623894363861073
1992	12.074586440298447
1993	12.583057385787855
1994	13.01809312631825
1995	13.27519586217388
1996	13.442428508022006
1997	13.614574206933808
1998	13.817213485106972
1999	14.06581041045793
2000	14.339295787462468
2001	14.623527638220091
2002	14.865242147174104
2003	15.040206096588918
2004	15.216849415522493
2005	15.406645543227507
2006	15.588768549849249
2007	15.758917474747328
2008	15.927399828876226
2009	16.091585573600035
2010	16.243456657381902
2011	16.413879428117788
2012	16.67551646282718
2013	17.099423237403165
2014	17.620371888289608
2015	18.132359111603986
2016	18.635048130360925
2017	19.180260685750277
2018	19.809829521955734
2019	20.501032254008848
2020	21.04889140452675
2021	21.35192947276136
2022	21.580277119869002
2023	21.947014290997167