Year	% of working-age population
1960	5.474530107561247
1961	5.513356344024159
1962	5.5690521785209155
1963	5.62488333791737
1964	5.67031521202209
1965	5.703539461276982
1966	5.728704834079415
1967	5.743750033804575
1968	5.748634227397739
1969	5.7515423686760485
1970	5.756929272946118
1971	5.7685931633314045
1972	5.783146739703296
1973	5.79604100581416
1974	5.809937409141025
1975	5.824270461177472
1976	5.841671174517858
1977	5.852264337154034
1978	5.851738915177177
1979	5.848301497312372
1980	5.8462120209373225
1981	5.8502031627926785
1982	5.859712922079087
1983	5.87368975580152
1984	5.9013092098997415
1985	5.950343817418245
1986	6.020302107617491
1987	6.110927308783966
1988	6.219050056393158
1989	6.349151173378435
1990	6.470888798906299
1991	6.5922103001026855
1992	6.743927068392135
1993	6.91759414329969
1994	7.110347566626783
1995	7.312356087836081
1996	7.522671774811106
1997	7.764795237927026
1998	8.061667991126878
1999	8.394538400231216
2000	8.734684218300155
2001	9.071621592291542
2002	9.409669092104453
2003	9.764215382474054
2004	10.167751361181924
2005	10.60886636930238
2006	11.00930028348702
2007	11.33311697893016
2008	11.623652087163975
2009	11.934300291343819
2010	12.308769297744803
2011	12.75558828056641
2012	13.27274428557591
2013	13.87869767415119
2014	14.562496172568448
2015	15.305357788848442
2016	16.08858560096089
2017	16.91294617779103
2018	17.795998795268243
2019	18.744376584332993
2020	19.76261878488266
2021	20.8236239115417
2022	21.961590626170576
2023	23.189223688379084