Year	% of total population
1960	62.657869137554655
1961	62.47341072908567
1962	62.51130878450847
1963	62.625552430859386
1964	62.7203692723515
1965	62.778923420294404
1966	62.89784336211625
1967	63.05004869303034
1968	63.17251596157242
1969	63.328627907265414
1970	63.50325630076034
1971	63.68379610747546
1972	63.851097918860155
1973	64.03442718167261
1974	64.22195385282622
1975	64.41199953523122
1976	64.6124291041129
1977	64.80075540419907
1978	64.99130687094508
1979	65.18555035169672
1980	65.40108017934338
1981	65.64143972693533
1982	65.90579380232953
1983	66.19079290623228
1984	66.42248371440097
1985	66.57797296533842
1986	66.69590382786177
1987	66.78646430643641
1988	66.81897369265005
1989	66.83747765642141
1990	66.86361899466797
1991	66.86085821890268
1992	66.83789844303746
1993	66.82635095829572
1994	66.8398123389616
1995	66.88152706554806
1996	66.95285157023478
1997	67.04352555870216
1998	67.1615591810528
1999	67.29630313142239
2000	67.41569844427389
2001	67.51023175319044
2002	67.59571971638017
2003	67.66427212059916
2004	67.70531830278786
2005	67.73950678853092
2006	67.77752731643326
2007	67.81902557121623
2008	67.83920456492662
2009	67.82436188632727
2010	67.7991755464975
2011	67.68858089503374
2012	67.44432245662917
2013	67.14899759685423
2014	66.84797341310579
2015	66.5773709914168
2016	66.29760416132699
2017	66.01184695170333
2018	65.76960675111498
2019	65.52626869507058
2020	65.26995858236691
2021	65.0416257844479
2022	64.89824044316424
2023	64.73808922372386