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	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	69.673
2002	359.366
2003	421.705
2004	476.71
2005	550.05
2006	1067.097
2007	513.38
2008	1378.792
2009	1041.428
2010	2478.892
2011	1675.819
2012	5243.81
2013	6710.61
2014	7484.347
2015	6501.591
2016	6985.635