Year	% of total population
1960	80.328
1961	80.219
1962	80.11
1963	80
1964	79.89
1965	79.779
1966	79.668
1967	79.556
1968	79.444
1969	79.332
1970	79.111
1971	78.55799999999999
1972	77.994
1973	77.42099999999999
1974	76.836
1975	76.242
1976	75.635
1977	75.02
1978	74.394
1979	73.758
1980	73.209
1981	72.951
1982	72.69200000000001
1983	72.431
1984	72.168
1985	71.905
1986	71.639
1987	71.372
1988	71.10300000000001
1989	70.833
1990	70.576
1991	70.407
1992	70.237
1993	70.066
1994	69.895
1995	69.724
1996	69.551
1997	69.378
1998	69.205
1999	69.031
2000	68.614
2001	67.452
2002	66.26599999999999
2003	65.059
2004	63.831
2005	62.589
2006	61.327
2007	60.05
2008	58.758
2009	57.457
2010	56.144
2011	55.302
2012	54.555
2013	53.807
2014	53.057
2015	52.306
2016	51.552
2017	50.8
2018	50.051
2019	49.308
2020	48.57
2021	47.837
2022	47.111
2023	46.392