Year	% of total population
1960	77.253
1961	76.682
1962	76.1
1963	75.509
1964	74.906
1965	74.29599999999999
1966	73.675
1967	73.045
1968	72.404
1969	71.756
1970	71.098
1971	70.431
1972	69.754
1973	69.07
1974	68.429
1975	67.89
1976	67.34700000000001
1977	66.8
1978	66.24799999999999
1979	65.691
1980	65.13
1981	64.565
1982	63.996
1983	63.423
1984	62.845
1985	62.265
1986	61.681
1987	61.093
1988	60.519
1989	60.031
1990	59.54
1991	59.047
1992	58.552
1993	58.057
1994	57.559
1995	57.059
1996	56.558
1997	56.056
1998	55.553
1999	55.048
2000	54.542
2001	54.036
2002	53.39
2003	52.733
2004	52.073
2005	51.415
2006	50.755
2007	50.095
2008	49.434
2009	48.775
2010	48.115
2011	47.457
2012	46.798
2013	46.142
2014	45.486
2015	44.835
2016	44.187
2017	43.543
2018	42.904
2019	42.27
2020	41.641
2021	41.018
2022	40.4
2023	39.788