Year	% of working-age population
1960	4.933047778705263
1961	5.0228712445022525
1962	5.128179297816534
1963	5.23491315593925
1964	5.334728713471626
1965	5.431260663978152
1966	5.529646188995806
1967	5.624372128860847
1968	5.7133223515526685
1969	5.797198510619182
1970	5.875557014074097
1971	5.949797985458877
1972	6.021437360638196
1973	6.0924331672428025
1974	6.1647348703298
1975	6.238515258542124
1976	6.311507316283213
1977	6.37990820263504
1978	6.4442123732428875
1979	6.507665613880037
1980	6.569671868133377
1981	6.629945798350512
1982	6.690746392711904
1983	6.754280886340797
1984	6.822180582078835
1985	6.894965747149011
1986	6.975994121103112
1987	7.069669078439982
1988	7.175391844033801
1989	7.290568890633615
1990	7.406175304432199
1991	7.519170787571233
1992	7.635154451856023
1993	7.753204295976143
1994	7.8697858493533515
1995	7.981057943093746
1996	8.089560756157416
1997	8.198266655226165
1998	8.3053058640864
1999	8.409793615375278
2000	8.51159230747268
2001	8.622398169995767
2002	8.746159709101061
2003	8.880510489652226
2004	9.029870949804145
2005	9.194823729071967
2006	9.3712532289646
2007	9.553420021859264
2008	9.738411385046287
2009	9.924164552186289
2010	10.10850349053731
2011	10.294528488012654
2012	10.49745731365434
2013	10.73438396286908
2014	11.02671401946729
2015	11.360197960261312
2016	11.705513532272553
2017	12.070514872422486
2018	12.462453168782165
2019	12.87643583103422
2020	13.296351026754444
2021	13.71107998626484
2022	14.139483246173304
2023	14.634141706603106