Year	kt
1960	1338.455
1961	1499.803
1962	1521.805
1963	1360.457
1964	1342.122
1965	1268.782
1966	1162.439
1967	1111.101
1968	1481.468
1969	1642.816
1970	1543.807
1971	1661.151
1972	1426.463
1973	1558.475
1974	1496.136
1975	1371.458
1976	1323.787
1977	832.409
1978	656.393
1979	612.389
1980	766.403
1981	781.071
1982	645.392
1983	480.377
1984	333.697
1985	282.359
1986	176.016
1987	168.682
1988	172.349
1989	168.682
1990	154.014
1991	165.015
1992	157.681
1993	157.681
1994	157.681
1995	150.347
1996	66.006
1997	66.006
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	25.669
2008	25.669
2009	25.669
2010	25.669
2011	124.678
2012	40.337
2013	36.67
2014	825.075
2015	429.039
2016	51.338