Year	% of working-age population
1960	56.883477163625074
1961	58.32493413165154
1962	59.293039376355964
1963	59.890000975791764
1964	60.017904904938106
1965	59.84487659651656
1966	59.754338620614966
1967	59.78651753518616
1968	59.625394372015826
1969	59.13303422331438
1970	58.46428399955369
1971	57.7541200015567
1972	57.01935417692126
1973	56.25541235634264
1974	55.433806800113146
1975	54.52625187576878
1976	53.61500177204146
1977	52.7993254605033
1978	52.011452920276845
1979	51.360344633444335
1980	50.89527181845696
1981	50.48455107447885
1982	50.1582374568935
1983	49.82139829692477
1984	49.60058832680807
1985	49.52750006267354
1986	49.429475554178616
1987	49.29938245044673
1988	49.13085490652649
1989	48.975661973407476
1990	48.815369605921155
1991	48.57973123126125
1992	48.362136107110416
1993	48.14054019163625
1994	47.77355792531963
1995	47.26420051802721
1996	46.58164068912295
1997	45.742734159640406
1998	44.7347966744951
1999	43.607771998006676
2000	42.46530409719645
2001	41.300861180641796
2002	40.14927907508884
2003	39.057173765584274
2004	38.03341525421042
2005	37.09061911852776
2006	36.25313045021481
2007	35.54646658603367
2008	34.99576199432069
2009	34.56313436412543
2010	34.22017539483592
2011	33.96765071175676
2012	33.826739575722065
2013	33.81970055077906
2014	33.943365903570715
2015	34.15210581700356
2016	34.37893856145926
2017	34.625106181359016
2018	34.92368534300396
2019	35.19952332215228
2020	35.39813762207629
2021	35.51998194025809
2022	36.02767017913389
2023	36.0747391937985