Year	% of working-age population
1960	51.626598617140395
1961	52.59458170881785
1962	52.838992034168605
1963	52.73652312021461
1964	52.199329316006875
1965	51.40123487412784
1966	50.60756354708275
1967	49.82260575286259
1968	49.02273959623302
1969	48.107760033809335
1970	47.070013502558545
1971	46.107666533138364
1972	45.27478661009281
1973	44.47924112285337
1974	43.74824131961477
1975	43.07944603570114
1976	42.492311123888854
1977	42.01945977295208
1978	41.60183509190823
1979	41.353824512472585
1980	41.288768417863636
1981	41.268578483240695
1982	41.25608938086744
1983	41.25667246436524
1984	41.3352547882084
1985	41.43835575351379
1986	41.5080508117761
1987	41.551484843399145
1988	41.559759452082865
1989	41.488023971559315
1990	41.31558286298375
1991	41.05528730352223
1992	40.741692493713416
1993	40.365174909934524
1994	39.88781398011072
1995	39.29599474809417
1996	38.577957446588044
1997	37.70477507760315
1998	36.62119065286562
1999	35.41464124056839
2000	34.23213591836261
2001	33.04747301424168
2002	31.876777531872637
2003	30.875825816733613
2004	30.074042859617002
2005	29.368852564501484
2006	28.781154119116504
2007	28.340034769619837
2008	28.07021794242985
2009	27.920035171153323
2010	27.827810408062433
2011	27.846389328368694
2012	28.024100235815943
2013	28.29871841278603
2014	28.660636631267653
2015	29.085968504899263
2016	29.51206603126788
2017	29.91199470783795
2018	30.268405870867543
2019	30.564821047627376
2020	30.79521188226795
2021	30.979382988261847
2022	31.192523783189955
2023	31.146262073496537