Year	% of working-age population
1960	40.139664108779705
1961	40.31525595636975
1962	40.198378203271986
1963	39.98969678607578
1964	39.82098277833071
1965	39.67711771036939
1966	39.51786916923259
1967	39.35142086333913
1968	39.162671177399275
1969	38.951095103772275
1970	38.67661039777384
1971	38.37206306121261
1972	38.07358447661615
1973	37.75748567724216
1974	37.44250963569307
1975	37.116637659273735
1976	36.76053070830648
1977	36.35965027144389
1978	35.86535045445917
1979	35.28336155802913
1980	34.65081090603522
1981	33.96675553239886
1982	33.22178706110258
1983	32.45155014642845
1984	31.752829297029926
1985	31.19045429408236
1986	30.705898445213474
1987	30.244810470758743
1988	29.8268167469686
1989	29.411020438453143
1990	28.985839158748448
1991	28.517998377626267
1992	28.06460786325253
1993	27.677473887788263
1994	27.267965813292083
1995	26.833275414512254
1996	26.40314465671405
1997	25.997302186077174
1998	25.620760712092085
1999	25.27666525818528
2000	24.948934818168876
2001	24.626974903600516
2002	24.310989450381573
2003	23.99817074045015
2004	23.70059140641136
2005	23.44877718378787
2006	23.245346186613318
2007	23.083309194074417
2008	23.000335712415954
2009	23.002979954273826
2010	23.027871651045395
2011	23.06641089398387
2012	23.112826653236024
2013	23.161575597037054
2014	23.20668200096249
2015	23.23986856208751
2016	23.28381913488512
2017	23.358900433620327
2018	23.41714166331349
2019	23.439531131588737
2020	23.426160871813273
2021	23.379250418952378
2022	23.21448969038683
2023	23.03903150088485