Year	% of total population
1960	80.774
1961	80.434
1962	80.09
1963	79.741
1964	79.387
1965	79.029
1966	78.666
1967	78.299
1968	77.92699999999999
1969	77.551
1970	77.17
1971	76.785
1972	76.394
1973	76.09700000000001
1974	76.087
1975	76.078
1976	76.06700000000001
1977	76.05799999999999
1978	76.048
1979	76.038
1980	76.027
1981	76.018
1982	76.007
1983	75.958
1984	75.788
1985	75.619
1986	75.44800000000001
1987	75.276
1988	75.104
1989	74.931
1990	74.757
1991	74.582
1992	74.407
1993	74.231
1994	74.054
1995	73.876
1996	73.697
1997	73.518
1998	73.337
1999	73.157
2000	72.975
2001	72.792
2002	72.60900000000001
2003	72.425
2004	72.24
2005	72.054
2006	71.868
2007	71.681
2008	71.493
2009	71.305
2010	71.115
2011	70.925
2012	70.73400000000001
2013	70.543
2014	70.35
2015	70.142
2016	69.918
2017	69.678
2018	69.42099999999999
2019	69.148
2020	68.85900000000001
2021	68.55199999999999
2022	68.229
2023	67.888