Year	% of working-age population
1960	18.792875081725594
1961	18.94419346420787
1962	19.084950816036294
1963	19.15420209691626
1964	19.291764071429053
1965	19.491711898873024
1966	19.734675564342748
1967	20.025145254980654
1968	20.27306147276824
1969	20.46948665535515
1970	20.671831812893103
1971	20.887606742772537
1972	21.08210323078692
1973	21.272100933659647
1974	21.45987790493472
1975	21.63239654729828
1976	21.74320389612819
1977	21.87778677524223
1978	22.04873933750686
1979	22.167693673078155
1980	21.97263488353389
1981	21.3574744878622
1982	20.68083592765167
1983	20.113892678428495
1984	19.68927778154413
1985	19.709454680718892
1986	20.071458808443456
1987	20.404811484574417
1988	20.72501555691704
1989	21.04981011561444
1990	21.408099564906415
1991	21.810382247741167
1992	22.20549102992513
1993	22.58114537701742
1994	22.953697544178343
1995	23.335917419013782
1996	23.70005510600819
1997	24.03477464330716
1998	24.330475474989864
1999	24.58485684272019
2000	24.804579279802297
2001	24.986283931542864
2002	25.137879364516113
2003	25.240901148145106
2004	25.368668306809777
2005	25.47134751184573
2006	25.475763186438087
2007	25.531554167053404
2008	25.71768406173375
2009	25.970648257266326
2010	26.241759080471503
2011	26.80466050925862
2012	27.68631016317762
2013	28.61330582465613
2014	29.55985334899003
2015	30.466708132152405
2016	31.29436800932145
2017	32.082819156289176
2018	32.83557006952491
2019	33.553486294372235
2020	34.1961731961862
2021	34.78316852985819
2022	35.42281108308269
2023	36.08986349962082