Year	% of total population
1960	82.076
1961	81.968
1962	81.782
1963	81.595
1964	81.405
1965	81.215
1966	81.023
1967	80.82900000000001
1968	80.634
1969	80.438
1970	80.24
1971	80.009
1972	79.679
1973	79.34700000000001
1974	79.009
1975	78.668
1976	78.32300000000001
1977	77.974
1978	77.621
1979	77.264
1980	76.902
1981	76.583
1982	76.35300000000001
1983	76.121
1984	75.887
1985	75.652
1986	75.41499999999999
1987	75.17699999999999
1988	74.937
1989	74.695
1990	74.453
1991	74.22200000000001
1992	74.01599999999999
1993	73.809
1994	73.601
1995	73.393
1996	73.18299999999999
1997	72.97200000000001
1998	72.76
1999	72.547
2000	72.333
2001	72.082
2002	71.756
2003	71.428
2004	71.09700000000001
2005	70.765
2006	70.431
2007	70.094
2008	69.754
2009	69.413
2010	69.07
2011	68.724
2012	68.366
2013	67.997
2014	67.616
2015	67.223
2016	66.818
2017	66.4
2018	65.97
2019	65.52799999999999
2020	65.074
2021	64.607
2022	64.128
2023	63.636