Year	kt
1960	7.334
1961	3.667
1962	3.667
1963	3.667
1964	3.667
1965	3.667
1966	3.667
1967	0
1968	3.667
1969	3.667
1970	3.667
1971	3.667
1972	0
1973	0
1974	0
1975	3.667
1976	0
1977	0
1978	0
1979	3.667
1980	3.667
1981	3.667
1982	3.667
1983	3.667
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
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