Year	% of total population
1960	63.4613301972993
1961	62.9684274132988
1962	62.9479534305462
1963	63.0720115014583
1964	63.4023934058755
1965	63.8301432365748
1966	64.2571826578229
1967	64.7220959121178
1968	65.1422629825333
1969	65.5989322281067
1970	66.1469551669225
1971	66.6141032902553
1972	66.9737643501438
1973	67.3548066589449
1974	67.696433363377
1975	67.9795017614129
1976	68.2140371390566
1977	68.3408086142317
1978	68.3740369976808
1979	68.2925845217903
1980	68.1661298901715
1981	68.1271811351217
1982	68.1100716027736
1983	67.9427981671506
1984	67.7340029367222
1985	67.6680784646121
1986	67.6315631922201
1987	67.5509947582209
1988	67.3990001425432
1989	67.2140752081891
1990	67.0619872429443
1991	66.8954093260123
1992	66.7202933902425
1993	66.5817509615858
1994	66.52524966671
1995	66.5918784289323
1996	66.8046281414923
1997	67.1777459171075
1998	67.7941946471179
1999	68.5950607415293
2000	69.3305922041972
2001	69.9927334007244
2002	70.5648043677739
2003	70.8632535654609
2004	70.9301847065003
2005	70.99583508836
2006	71.0838221192078
2007	71.2503110988521
2008	71.5450730452658
2009	71.8330578525443
2010	72.0484598998375
2011	71.9427580916669
2012	71.4714063827701
2013	70.9144473873167
2014	70.2503744843455
2015	69.5334729636981
2016	68.886519921298
2017	68.3099791398618
2018	67.8530449494985
2019	67.4321659554861
2020	67.0134619314898
2021	66.6869722769909
2022	66.4978203042189
2023	66.26643827607