Year	% of working-age population
1960	15.76640120908284
1961	16.051005853845446
1962	16.316801176424587
1963	16.534412982437733
1964	16.797714697033904
1965	17.132396111801512
1966	17.49932925907389
1967	17.874471290797135
1968	18.214211525971223
1969	18.52924493624089
1970	18.865070960748326
1971	19.19217379955345
1972	19.495539793669945
1973	19.781737803338903
1974	20.045827482763922
1975	20.2784187445961
1976	20.466737710288758
1977	20.668520354929424
1978	20.876196238626928
1979	21.025005656504966
1980	20.966901154503173
1981	20.633817767712802
1982	20.188796423784318
1983	19.729655911674804
1984	19.429178953513436
1985	19.492768407526718
1986	19.775868641496217
1987	20.06911627136712
1988	20.362210298964417
1989	20.647333317078022
1990	20.94094857526408
1991	21.239675511292216
1992	21.54474221969991
1993	21.87329273051348
1994	22.213521315013097
1995	22.58579505365304
1996	22.94810307735174
1997	23.267145606458
1998	23.56613063503263
1999	23.89104523459408
2000	24.282005770141232
2001	24.702631154618935
2002	25.088578363846405
2003	25.426415697003836
2004	25.805617986714843
2005	26.25061259782956
2006	26.642506680937785
2007	26.88745791341114
2008	27.115537879564098
2009	27.425941836425032
2010	27.69095033673065
2011	28.03645167031694
2012	28.58610014615985
2013	29.207489172718667
2014	29.86842799498279
2015	30.46930881052326
2016	31.01143811901177
2017	31.541089696655924
2018	32.05788174706481
2019	32.58946421303265
2020	33.11049872142693
2021	33.61497048281923
2022	34.19792940928034
2023	34.89373792107475