Year	kt
1960	113.677
1961	425.372
1962	124.678
1963	187.017
1964	238.355
1965	242.022
1966	168.682
1967	245.689
1968	154.014
1969	183.35
1970	172.349
1971	139.346
1972	139.346
1973	121.011
1974	124.678
1975	150.347
1976	128.345
1977	234.688
1978	242.022
1979	201.685
1980	253.023
1981	253.023
1982	344.698
1983	238.355
1984	267.691
1985	275.025
1986	264.024
1987	282.359
1988	304.361
1989	443.707
1990	550.05
1991	374.034
1992	172.349
1993	220.02
1994	234.688
1995	216.353
1996	69.673
1997	73.34
1998	88.008
1999	91.675
2000	84.341
2001	66.006
2002	69.673
2003	99.009
2004	102.676
2005	77.007
2006	25.669
2007	73.34
2008	91.675
2009	88.008
2010	77.007
2011	11.001
2012	14.668
2013	36.67
2014	3.667
2015	22.002
2016	7.334