Year	% of total population
1960	65.0091607274595
1961	65.2620395897561
1962	65.6787979787036
1963	65.9928309982176
1964	66.1106783344944
1965	66.1795906925164
1966	66.2909021651637
1967	66.4077575147182
1968	66.5038945103778
1969	66.5717613794344
1970	66.6110200511569
1971	66.5770883433679
1972	66.3978791375797
1973	66.0323839959662
1974	65.4623449795464
1975	64.8101589168533
1976	64.2156068998308
1977	63.7098145507235
1978	63.3253567387545
1979	63.1118452045211
1980	63.1449103926895
1981	63.4329331697303
1982	63.8482961965876
1983	64.3053946315091
1984	64.6482968047318
1985	64.7783405795128
1986	64.8347857062434
1987	64.9393879800219
1988	65.1578994564521
1989	65.5412193639174
1990	66.026292586999
1991	66.4874031644915
1992	66.921382795222
1993	67.3491494964612
1994	67.7793427719031
1995	68.1718837491619
1996	68.4972373286546
1997	68.8078741170933
1998	69.1191959728493
1999	69.4465012551776
2000	69.7936140838382
2001	70.1477750942399
2002	70.4876310903218
2003	70.8132459507491
2004	71.0771728951538
2005	71.2351508198402
2006	71.3017070175447
2007	71.2410748910627
2008	71.009525096056
2009	70.6208073494148
2010	70.1356430049111
2011	69.5056061478728
2012	68.7436367648586
2013	67.991633500332
2014	67.2937659200804
2015	66.6399320207368
2016	66.008523032882
2017	65.398974770933
2018	64.8321819362172
2019	64.3159719806762
2020	63.8732950439863
2021	63.5444681138611
2022	63.4040725802379
2023	63.4206851736897