Year	% of total population
1960	90.9
1961	90.541
1962	90.169
1963	89.784
1964	89.386
1965	88.974
1966	88.549
1967	88.109
1968	87.653
1969	87.185
1970	86.7
1971	86.402
1972	86.099
1973	85.791
1974	85.476
1975	85.156
1976	84.82900000000001
1977	84.498
1978	84.16
1979	83.81700000000001
1980	83.46600000000001
1981	83.111
1982	82.749
1983	82.381
1984	82.007
1985	81.627
1986	81.19200000000001
1987	80.67699999999999
1988	80.151
1989	79.615
1990	79.069
1991	78.511
1992	77.94200000000001
1993	77.364
1994	76.775
1995	76.24
1996	75.751
1997	75.257
1998	74.756
1999	74.248
2000	73.733
2001	73.213
2002	72.685
2003	72.151
2004	71.61
2005	71.064
2006	70.51
2007	69.949
2008	69.381
2009	68.806
2010	68.224
2011	67.636
2012	67.042
2013	66.441
2014	65.83500000000001
2015	65.223
2016	64.606
2017	63.984
2018	63.358
2019	62.727
2020	62.092
2021	61.454
2022	60.812
2023	60.169