Year	% of total population
1960	25.107
1961	24.212999999999994
1962	23.340000000000003
1963	22.489000000000004
1964	21.659000000000006
1965	20.727000000000004
1966	19.284000000000006
1967	17.918999999999997
1968	16.629000000000005
1969	15.418000000000006
1970	14.338999999999999
1971	13.555999999999997
1972	12.808000000000007
1973	12.097999999999999
1974	11.421000000000006
1975	10.616
1976	9.254999999999995
1977	8.055999999999997
1978	7
1979	6.072000000000003
1980	5.218999999999994
1981	4.329999999999998
1982	3.5859999999999985
1983	2.965999999999994
1984	2.448999999999998
1985	2.096999999999994
1986	2.0829999999999984
1987	2.067999999999998
1988	2.054000000000002
1989	2.0400000000000063
1990	2.0259999999999962
1991	2.0120000000000005
1992	1.9980000000000047
1993	1.9839999999999947
1994	1.9710000000000036
1995	1.9039999999999964
1996	1.6749999999999972
1997	1.472999999999999
1998	1.2950000000000017
1999	1.1380000000000052
2000	1
2001	0.09199999999999875
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0
2022	0
2023	0