Year	% of total population
1960	78.53999999999999
1961	78.304
1962	78.066
1963	77.826
1964	77.584
1965	77.34
1966	77.095
1967	76.84700000000001
1968	76.59700000000001
1969	76.346
1970	76.093
1971	75.838
1972	75.581
1973	75.32300000000001
1974	75.062
1975	74.8
1976	74.535
1977	74.27
1978	74.002
1979	73.732
1980	73.46000000000001
1981	73.188
1982	72.913
1983	72.636
1984	72.357
1985	72.077
1986	71.795
1987	71.512
1988	71.226
1989	70.939
1990	70.651
1991	70.428
1992	70.631
1993	70.833
1994	71.035
1995	71.235
1996	71.435
1997	71.634
1998	71.832
1999	72.029
2000	72.226
2001	72.527
2002	73.67099999999999
2003	74.78399999999999
2004	75.867
2005	76.91499999999999
2006	77.932
2007	78.916
2008	79.869
2009	80.787
2010	81.55
2011	81.55
2012	81.55
2013	81.539
2014	81.518
2015	81.485
2016	81.44200000000001
2017	81.388
2018	81.322
2019	81.246
2020	81.15899999999999
2021	81.06
2022	80.95
2023	80.828