Year	% of total population
1960	62.136
1961	61.728
1962	61.376
1963	61.023
1964	60.669
1965	60.314
1966	59.958
1967	59.601
1968	59.242
1969	58.883
1970	58.523
1971	58.162
1972	57.8
1973	57.437
1974	57.074
1975	56.709
1976	56.344
1977	56.19
1978	56.174
1979	56.158
1980	56.142
1981	56.126
1982	56.11
1983	56.094
1984	56.078
1985	56.062
1986	56.046
1987	56.123
1988	56.256
1989	56.389
1990	56.522
1991	56.655
1992	56.788
1993	56.921
1994	57.054
1995	57.186
1996	57.319
1997	57.342
1998	57.296
1999	57.25
2000	57.203
2001	57.157
2002	57.111
2003	57.065
2004	57.019
2005	56.973
2006	56.927
2007	56.922
2008	56.942
2009	56.961
2010	56.981
2011	57
2012	57.054
2013	57.107
2014	57.161
2015	57.215
2016	57.268
2017	57.295
2018	57.296
2019	57.27
2020	57.217
2021	57.138
2022	57.033
2023	56.9