Year	% of total population
1960	85.3
1961	84.969
1962	84.631
1963	84.286
1964	83.936
1965	83.57900000000001
1966	83.21600000000001
1967	82.84700000000001
1968	82.471
1969	82.089
1970	81.7
1971	81.604
1972	81.508
1973	81.412
1974	81.315
1975	81.218
1976	81.12
1977	81.02199999999999
1978	80.924
1979	80.825
1980	80.753
1981	80.691
1982	80.628
1983	80.565
1984	80.502
1985	80.439
1986	80.375
1987	80.312
1988	80.248
1989	80.10900000000001
1990	79.743
1991	79.371
1992	78.994
1993	78.613
1994	78.226
1995	77.834
1996	77.437
1997	77.035
1998	76.629
1999	76.18299999999999
2000	75.626
2001	75.063
2002	74.489
2003	73.908
2004	73.31700000000001
2005	72.719
2006	72.112
2007	71.496
2008	70.872
2009	70.238
2010	69.583
2011	68.92
2012	68.248
2013	67.571
2014	66.88499999999999
2015	66.191
2016	65.49000000000001
2017	64.787
2018	64.081
2019	63.372
2020	62.66
2021	61.948
2022	61.234
2023	60.52