Year	% of total population
1960	71.79599999999999
1961	70.893
1962	70.066
1963	69.224
1964	68.369
1965	67.503
1966	66.624
1967	65.73400000000001
1968	64.831
1969	63.919
1970	62.996
1971	62.028
1972	60.942
1973	59.847
1974	58.741
1975	57.626
1976	56.501
1977	55.373
1978	54.238
1979	53.099
1980	51.955
1981	51.059
1982	50.898
1983	50.737
1984	50.576
1985	50.416
1986	50.254
1987	50.093
1988	49.932
1989	49.771
1990	49.61
1991	49.483
1992	49.457
1993	49.431
1994	49.404
1995	49.378
1996	49.351
1997	49.325
1998	49.299
1999	49.272
2000	49.246
2001	49.22
2002	49.143
2003	48.918
2004	48.692
2005	48.467
2006	48.242
2007	48.017
2008	47.791
2009	47.567
2010	47.342
2011	47.117
2012	46.892
2013	46.668
2014	46.443
2015	46.219
2016	45.98
2017	45.727
2018	45.459
2019	45.178
2020	44.882
2021	44.573
2022	44.249
2023	43.912