Year	% of total population
1960	64.9165387667023
1961	64.8541707800294
1962	64.8940030983218
1963	64.886897251529
1964	64.7109855833945
1965	64.4089495793582
1966	64.0734152336062
1967	63.728090077833
1968	63.4142204304993
1969	63.1387302598159
1970	62.8671661362804
1971	62.6231552803719
1972	62.4732012006533
1973	62.4386585276583
1974	62.4849014229455
1975	62.6169008861658
1976	62.8491433166259
1977	63.1425558326773
1978	63.4456120869473
1979	63.7465585160094
1980	64.0425290993583
1981	64.3662552347716
1982	64.7614833786131
1983	65.1861047787451
1984	65.4832054428409
1985	65.5757292495109
1986	65.5910337926038
1987	65.5772874056498
1988	65.5051877482501
1989	65.4033389703105
1990	65.2554417840764
1991	65.0681879317417
1992	64.8840960165706
1993	64.758072395641
1994	64.7184520791404
1995	64.7448426182856
1996	64.7926219760875
1997	64.8434702732124
1998	64.9305444624256
1999	65.0613673586273
2000	65.2232542529896
2001	65.3954495307792
2002	65.576891617299
2003	65.7608117003043
2004	65.9197814022155
2005	66.0869482557652
2006	66.2566233633808
2007	66.3423017075424
2008	66.312100677478
2009	66.1962302736544
2010	66.0291771490867
2011	65.7729298770563
2012	65.4050644201067
2013	65.0427822197394
2014	64.7463351681576
2015	64.4801151299842
2016	64.2256509358444
2017	63.9804670881907
2018	63.7695116057054
2019	63.5952093617214
2020	63.4891380150104
2021	63.4226913215275
2022	63.3633950575328
2023	63.3250710595992