Year	kt
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	14.668
1989	14.668
1990	11.001
1991	7.334
1992	3.667
1993	25.669
1994	36.67
1995	91.675
1996	84.341
1997	44.004
1998	40.337
1999	11.001
2000	0
2001	0
2002	7.334
2003	22.002
2004	25.669
2005	25.669
2006	22.002
2007	22.002
2008	22.002
2009	33.003
2010	47.671
2011	36.67
2012	55.005
2013	84.341
2014	73.34
2015	47.671
2016	44.004