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	198.018
1998	1595.145
1999	4455.405
2000	4657.09
2001	5163.136
2002	6252.235
2003	6039.549
2004	7565.021
2005	8591.781
2006	8335.091
2007	8723.793
2008	9479.195
2009	9658.878
2010	10278.601
2011	10223.596
2012	9006.152
2013	8602.782
2014	7953.723
2015	9332.515
2016	9845.895
