Year	% of total population
1960	65.2516565692645
1961	65.2891812202314
1962	65.3061407883681
1963	65.3491682234677
1964	65.3972445970333
1965	65.3741988295945
1966	65.2812704536842
1967	65.146044452014
1968	64.9696311085277
1969	64.7795568197458
1970	64.5633956463529
1971	64.3637137571422
1972	64.3280163764973
1973	64.4910797858024
1974	64.8024480818577
1975	65.2431908538877
1976	65.571712481061
1977	65.7108102805572
1978	65.8983919102039
1979	66.2164011873243
1980	66.6317664708089
1981	67.1017819624932
1982	67.5964787754409
1983	68.0783762411036
1984	68.4988725275058
1985	68.8379081147105
1986	69.0798428882452
1987	69.2204103798509
1988	69.3119830436503
1989	69.363811028712
1990	69.3772826036707
1991	69.2567985221449
1992	69.0084957908338
1993	68.7904758892836
1994	68.6288961187094
1995	68.5352431791638
1996	68.448584134893
1997	68.3674855536631
1998	68.3332062047972
1999	68.3337706819877
2000	68.3933616183722
2001	68.3944564651749
2002	68.331787465218
2003	68.3163511222416
2004	68.3348045312897
2005	68.412552068133
2006	68.5815612169702
2007	68.7817548760153
2008	68.9209615764312
2009	68.9932635932212
2010	69.0405110477435
2011	68.8747869394686
2012	68.5325398276395
2013	68.302627132433
2014	68.1301949817447
2015	67.9906282754794
2016	67.8444798025916
2017	67.7365856611083
2018	67.8795633093783
2019	68.1651024142613
2020	68.3947695229747
2021	68.5108884172489
2022	68.4811580882353
2023	68.3238616111528