Year	% of working-age population
1960	9.069484847369003
1961	9.067775348553814
1962	8.982785602503911
1963	8.882144663631765
1964	8.838713893608679
1965	8.85907317537349
1966	8.907912285599082
1967	8.985700436257876
1968	9.131541558134028
1969	9.358095403396106
1970	9.611527051843481
1971	9.866244379718916
1972	10.082560506672698
1973	10.25525186356449
1974	10.416079382082652
1975	10.588102812420821
1976	10.788404829466423
1977	10.994361160775684
1978	11.200892371313527
1979	11.41711085985032
1980	11.630234395575455
1981	11.799156645322505
1982	11.895451739040954
1983	11.948408063779008
1984	12.021857923497267
1985	12.093898573692552
1986	12.138629359683021
1987	12.178076560346286
1988	12.233228060101444
1989	12.31571462431856
1990	12.411831091883759
1991	12.559174398788109
1992	12.755175216331214
1993	12.949983311877174
1994	13.169573988370715
1995	13.380863570905829
1996	13.63187820121235
1997	13.965944706928008
1998	14.341175376604054
1999	14.724054147865326
2000	15.087107214175868
2001	15.48022085387744
2002	15.885740092582138
2003	16.284130937156448
2004	16.690814256737177
2005	17.041708153556808
2006	17.249780509218613
2007	17.47919661917832
2008	17.8640272032228
2009	18.293156237871404
2010	18.89465196356187
2011	19.744139287213596
2012	20.664468005046594
2013	21.587280468334217
2014	22.41298891677587
2015	23.191049224814822
2016	24.110895205386594
2017	25.234936428966282
2018	26.407771502939877
2019	27.55659824046921
2020	28.800947867298575
2021	30.085101282512284
2022	31.453567274137264
2023	32.946210268948654