Year	% of total population
1960	60.344
1961	60.96
1962	61.573
1963	62.183
1964	62.789
1965	63.39
1966	63.988
1967	64.582
1968	65.17099999999999
1969	65.755
1970	66.181
1971	66.102
1972	66.02199999999999
1973	65.943
1974	65.863
1975	65.783
1976	65.703
1977	65.62299999999999
1978	65.543
1979	65.462
1980	65.382
1981	65.30199999999999
1982	65.221
1983	65.14
1984	65.06
1985	64.979
1986	64.898
1987	64.81700000000001
1988	64.73599999999999
1989	64.655
1990	64.574
1991	64.535
1992	64.91499999999999
1993	65.291
1994	65.666
1995	66.039
1996	66.41
1997	66.779
1998	67.14500000000001
1999	67.50999999999999
2000	67.87299999999999
2001	68.26
2002	68.902
2003	69.536
2004	70.163
2005	70.782
2006	71.394
2007	71.998
2008	72.595
2009	73.182
2010	73.762
2011	74.297
2012	74.474
2013	74.65
2014	74.825
2015	75
2016	75.154
2017	75.287
2018	75.401
2019	75.494
2020	75.56700000000001
2021	75.62
2022	75.654
2023	75.668