Year	% of working-age population
1960	35.9833645468318
1961	36.00426154225614
1962	35.83052603484246
1963	35.75508548533228
1964	35.96353152244001
1965	36.35950318880087
1966	36.828233827861986
1967	37.296812432629714
1968	37.69961438154369
1969	38.03806158379193
1970	38.34439697332461
1971	38.57094360615403
1972	38.59021266734325
1973	38.35058340087238
1974	37.91711536143025
1975	37.29008667715913
1976	36.473194345453585
1977	35.53092698504907
1978	34.564086334137876
1979	33.65621549343509
1980	32.82892899518669
1981	32.04462683593613
1982	31.25749375184212
1983	30.506403264883392
1984	29.88422518202502
1985	29.44642313048551
1986	29.103472561693483
1987	28.87690015936968
1988	28.84687452929335
1989	28.947536269348507
1990	29.16064696022838
1991	29.464586699866775
1992	29.78883620017846
1993	30.035648220309874
1994	30.110074779009583
1995	30.040498526128378
1996	29.944877256600076
1997	29.85640228041253
1998	29.724110892192257
1999	29.519658592680937
2000	29.219370995449452
2001	28.854423834144782
2002	28.456654667089097
2003	28.056567169319784
2004	27.7032794138443
2005	27.35147710589946
2006	27.01204770982785
2007	26.779992878059595
2008	26.67818244186111
2009	26.657833417340733
2010	26.697108303485507
2011	26.803481697735148
2012	26.97363116922917
2013	27.146217456849858
2014	27.294787511218665
2015	27.483238686209948
2016	27.715391694623232
2017	27.93986773900824
2018	28.082938763968762
2019	28.106029304710805
2020	28.01794309964778
2021	27.846831270604916
2022	27.56594921824465
2023	27.187765103117677