Year	kt
1960	84.341
1961	84.341
1962	84.341
1963	84.341
1964	84.341
1965	84.341
1966	102.676
1967	128.345
1968	146.68
1969	168.682
1970	187.017
1971	242.022
1972	278.692
1973	366.7
1974	429.039
1975	553.717
1976	671.061
1977	700.397
1978	678.395
1979	707.731
1980	773.737
1981	806.74
1982	865.412
1983	975.422
1984	1045.095
1985	971.755
1986	1052.429
1987	451.041
1988	355.699
1989	447.374
1990	465.709
1991	275.025
1992	198.018
1993	157.681
1994	99.009
1995	51.338
1996	44.004
1997	36.67
1998	33.003
1999	29.336
2000	22.002
2001	14.668
2002	25.669
2003	25.669
2004	33.003
2005	22.002
2006	22.002
2007	33.003
2008	14.668
2009	18.335
2010	25.669
2011	29.336
2012	29.336
2013	33.003
2014	58.672
2015	62.339
2016	161.348