Year	% of total population
1960	89.565
1961	89.202
1962	88.79599999999999
1963	88.376
1964	87.94200000000001
1965	87.496
1966	87.035
1967	86.559
1968	86.068
1969	85.564
1970	85.043
1971	84.368
1972	83.545
1973	82.69
1974	81.798
1975	80.872
1976	79.908
1977	78.912
1978	77.878
1979	76.80799999999999
1980	75.702
1981	74.563
1982	73.388
1983	72.179
1984	70.935
1985	69.662
1986	68.357
1987	67.02199999999999
1988	65.657
1989	64.269
1990	62.856
1991	61.42
1992	59.961
1993	58.489
1994	57
1995	55.831
1996	54.654
1997	53.475
1998	52.29
1999	51.103
2000	49.913
2001	48.726
2002	47.539
2003	46.355
2004	45.173
2005	44
2006	43.236
2007	42.476
2008	41.718
2009	40.966
2010	40.217
2011	39.472
2012	38.732
2013	37.998
2014	37.269
2015	36.554
2016	35.851
2017	35.161
2018	34.486000000000004
2019	33.82299999999999
2020	33.175
2021	32.540000000000006
2022	31.918999999999997
2023	31.311999999999998