Year	kt
1960	3.667
1961	7.334
1962	7.334
1963	7.334
1964	7.334
1965	7.334
1966	7.334
1967	7.334
1968	7.334
1969	7.334
1970	7.334
1971	7.334
1972	3.667
1973	7.334
1974	3.667
1975	3.667
1976	7.334
1977	7.334
1978	18.335
1979	22.002
1980	25.669
1981	14.668
1982	18.335
1983	22.002
1984	36.67
1985	47.671
1986	51.338
1987	44.004
1988	51.338
1989	55.005
1990	51.338
1991	44.004
1992	36.67
1993	36.67
1994	36.67
1995	33.003
1996	29.336
1997	36.67
1998	33.003
1999	44.004
2000	36.67
2001	29.336
2002	29.336
2003	29.336
2004	29.336
2005	29.336
2006	36.67
2007	36.67
2008	33.003
2009	33.003
2010	29.336
2011	33.003
2012	36.67
2013	44.004
2014	25.669
2015	33.003
2016	33.003