Year	% of working-age population
1960	36.79430684310368
1961	37.12555755011282
1962	37.25479882160224
1963	37.3961994577406
1964	37.59046536928651
1965	37.79516624533799
1966	37.95119459032379
1967	38.00152198886458
1968	37.8994713938253
1969	37.71073173614391
1970	37.484560877823434
1971	37.22222049081467
1972	36.86183522786057
1973	36.33979607055494
1974	35.64781908071076
1975	34.874517938179295
1976	34.06924560094762
1977	33.27754638514159
1978	32.50859295515165
1979	31.71550041939649
1980	30.949883236397707
1981	30.23502906649641
1982	29.565814590930227
1983	28.94562141523891
1984	28.39596376206722
1985	27.935617073755292
1986	27.548718361988335
1987	27.23567682193085
1988	27.044272155691722
1989	26.987153911396582
1990	27.049112769200107
1991	27.171942490995022
1992	27.273984765475355
1993	27.316247866284844
1994	27.27501035838133
1995	27.18432180237228
1996	27.089946568567946
1997	27.01176646854923
1998	26.9467872170248
1999	26.8864478140182
2000	26.845409306019498
2001	26.77964744540267
2002	26.653143621003604
2003	26.49189259566549
2004	26.32227333418368
2005	26.13112201694701
2006	25.90025566682037
2007	25.689125566197035
2008	25.592001728108972
2009	25.61577869154512
2010	25.7001627475351
2011	25.813400102432375
2012	25.92872313433945
2013	26.037865634242362
2014	26.1402970074011
2015	26.204827769515514
2016	26.241512917320385
2017	26.289572874685206
2018	26.33184708650474
2019	26.31926131222564
2020	26.240294299823226
2021	26.118097338665603
2022	25.940248013586064
2023	25.705301748674103