Year	% of working-age population
1960	56.655338059864725
1961	57.690789633350605
1962	58.33202102279378
1963	58.63652651646476
1964	58.71323479659421
1965	58.57987423926889
1966	59.13966631509141
1967	60.46827348588061
1968	61.58109073931654
1969	62.28754522736683
1970	61.95343333805054
1971	60.8876066658422
1972	59.845677252598975
1973	58.82044207685152
1974	57.78478879803322
1975	56.734489694939974
1976	55.72881868946654
1977	54.76438263450246
1978	53.89137635097187
1979	53.175658271198564
1980	52.58409767133057
1981	52.068085451157266
1982	51.60481953122237
1983	51.20546344347521
1984	50.922031018327
1985	50.74117872212215
1986	50.59818334600457
1987	50.48381002656268
1988	50.43640594309687
1989	50.60062475132696
1990	51.15054777122191
1991	51.96184409322531
1992	52.85513059727825
1993	53.80274315120403
1994	54.636265151621735
1995	55.198941731947635
1996	55.4894177375743
1997	55.56399154430211
1998	55.41391383326253
1999	54.97927616053874
2000	54.412565605242214
2001	53.878202191889834
2002	53.401718971886545
2003	53.04764080975046
2004	52.705910531515855
2005	52.189103677800254
2006	51.44442818253666
2007	50.42055643210717
2008	49.17902961214877
2009	48.03205741181146
2010	47.30530559657424
2011	47.10396632826806
2012	47.365879279198815
2013	48.01106798049169
2014	48.92830773123968
2015	49.99681909509295
2016	51.1333669590264
2017	52.21791637251375
2018	53.206650147777864
2019	54.09702224534498
2020	54.81946124705922
2021	55.402729827681355
2022	55.93986876272196
2023	56.412909966902745