Year	% of total population
1960	65.4780420264614
1961	65.3905330485748
1962	65.469822627255
1963	65.5728059871592
1964	65.5463655361524
1965	65.4010844568505
1966	65.204272213151
1967	64.9534017400931
1968	64.7072790203465
1969	64.4646479597442
1970	64.228899515408
1971	64.0265930229806
1972	63.8411752759336
1973	63.6770218615971
1974	63.5428827759362
1975	63.4972310681661
1976	63.5380128718023
1977	63.6221129589149
1978	63.769535726733
1979	64.0274057324579
1980	64.4931337688039
1981	65.0959358460049
1982	65.7401984803867
1983	66.4494952715334
1984	67.115312196321
1985	67.5085574285048
1986	67.7348889666739
1987	67.9710962382423
1988	68.1661658451514
1989	68.3477785603838
1990	68.5055495169977
1991	68.8251513276226
1992	69.0207088603189
1993	68.9068933209733
1994	68.7769515898981
1995	68.5693166209273
1996	68.3217548436398
1997	68.104288669599
1998	67.8953252168614
1999	67.667271026878
2000	67.4166538264948
2001	67.1764085239594
2002	66.9202380973019
2003	66.6941592542455
2004	66.4694834716804
2005	66.1674296350735
2006	65.9023334336188
2007	65.7716758849635
2008	65.6995405182864
2009	65.5924975103186
2010	65.5063583988954
2011	65.309693591446
2012	65.0040628328436
2013	64.7227715661634
2014	64.4531677550101
2015	64.2570947847012
2016	64.1303906036509
2017	64.0449178481873
2018	63.981815651042
2019	63.8781985621066
2020	63.7699228420107
2021	63.6677831104906
2022	63.5161719486847
2023	63.341305457017