Year	kt
1960	1041.428
1961	1059.763
1962	839.743
1963	817.741
1964	938.752
1965	1180.774
1966	909.416
1967	949.753
1968	740.734
1969	887.414
1970	788.405
1971	876.413
1972	850.744
1973	828.742
1974	832.409
1975	671.061
1976	876.413
1977	887.414
1978	843.41
1979	748.068
1980	843.41
1981	861.745
1982	825.075
1983	806.74
1984	825.075
1985	821.408
1986	839.743
1987	850.744
1988	931.418
1989	843.41
1990	891.081
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0