Year	% of total population
1960	77.896
1961	77.499
1962	77.249
1963	76.998
1964	76.744
1965	76.489
1966	76.231
1967	75.97200000000001
1968	75.711
1969	75.44800000000001
1970	75.18299999999999
1971	74.916
1972	74.64699999999999
1973	74.32900000000001
1974	73.995
1975	73.65899999999999
1976	73.319
1977	72.977
1978	72.632
1979	72.285
1980	71.934
1981	71.62
1982	71.381
1983	71.14099999999999
1984	70.899
1985	70.656
1986	70.412
1987	70.167
1988	69.92
1989	69.673
1990	69.424
1991	69.174
1992	68.923
1993	68.67099999999999
1994	68.418
1995	68.164
1996	67.908
1997	67.652
1998	67.41499999999999
1999	67.217
2000	67.018
2001	66.82
2002	66.62
2003	66.42
2004	66.219
2005	66.018
2006	65.816
2007	65.613
2008	65.41
2009	65.207
2010	65.003
2011	64.798
2012	64.592
2013	64.387
2014	64.181
2015	63.974
2016	63.766
2017	63.558
2018	63.334
2019	63.093
2020	62.835
2021	62.56
2022	62.269
2023	61.96