Year	% of total population
1960	66.231
1961	65.5
1962	64.761
1963	64.015
1964	63.26
1965	62.501
1966	61.735
1967	60.964
1968	60.185
1969	59.404
1970	58.676
1971	58.142
1972	57.605
1973	57.067
1974	56.528
1975	55.987
1976	55.443
1977	54.9
1978	54.355
1979	53.809
1980	53.261
1981	52.714
1982	52.187
1983	51.984
1984	51.78
1985	51.576
1986	51.372
1987	51.168
1988	50.964
1989	50.76
1990	50.556
1991	50.344
1992	50.104
1993	49.864
1994	49.625
1995	49.385
1996	49.145
1997	48.905
1998	48.665
1999	48.426
2000	48.186
2001	47.947
2002	47.749
2003	47.563
2004	47.375
2005	47.189
2006	47.002
2007	46.816
2008	46.629
2009	46.443
2010	46.257
2011	46.07
2012	45.868
2013	45.65
2014	45.416
2015	45.167
2016	44.902
2017	44.622
2018	44.326
2019	44.015
2020	43.689
2021	43.348
2022	42.992
2023	42.622