Year	% of total population
1960	56.9261300233713
1961	56.5672363477651
1962	56.0644128280579
1963	55.6323145048977
1964	55.2325679589924
1965	54.9407114624506
1966	54.7999111088749
1967	54.7553064312526
1968	54.8291090829893
1969	55.0514559797834
1970	55.4402084532948
1971	55.9693748078705
1972	56.6142825456547
1973	57.3420399153867
1974	58.1083664495975
1975	58.9025073808989
1976	59.7055880689082
1977	60.4643058843321
1978	61.1274894525694
1979	61.6803522315661
1980	62.1180363167432
1981	62.4514348200806
1982	62.6997911141362
1983	62.874335537973
1984	63.013621425809
1985	63.1698531664024
1986	63.3800363819329
1987	63.6585941064124
1988	63.9921317506661
1989	64.3336077199247
1990	64.7001560640944
1991	65.0962598592147
1992	65.4428592016141
1993	65.7114777840997
1994	65.914566230372
1995	66.0744137992821
1996	66.2358467770322
1997	66.4123210415444
1998	66.6021851643235
1999	66.7648990515559
2000	66.9137789667381
2001	67.0991968015254
2002	67.2485034996529
2003	67.3912799674017
2004	67.598368745461
2005	67.8477198425098
2006	68.1189458834319
2007	68.3194323691074
2008	68.3293261515833
2009	68.2002545732793
2010	68.1399725529738
2011	68.1706726100916
2012	68.181826410449
2013	68.1770899174688
2014	68.1660438281326
2015	68.1618437660698
2016	68.1707093870784
2017	68.1202921339461
2018	67.9829524631867
2019	67.7710182222468
2020	67.4705104865458
2021	67.1222743994922
2022	66.7986933442221
2023	66.5625869916364