Year	kt
1960	1448.465
1961	1477.801
1962	1598.812
1963	1422.796
1964	1727.157
1965	1873.837
1966	1694.154
1967	740.734
1968	7.334
1969	58.672
1970	172.349
1971	550.05
1972	858.078
1973	803.073
1974	773.737
1975	594.054
1976	766.403
1977	704.064
1978	542.716
1979	458.375
1980	476.71
1981	286.026
1982	161.348
1983	154.014
1984	201.685
1985	370.367
1986	297.027
1987	205.352
1988	161.348
1989	143.013
1990	165.015
1991	190.684
1992	139.346
1993	22.002
1994	66.006
1995	51.338
1996	22.002
1997	25.669
1998	33.003
1999	44.004
2000	7.334
2001	7.334
2002	113.677
2003	62.339
2004	22.002
2005	22.002
2006	22.002
2007	62.339
2008	84.341
2009	91.675
2010	102.676
2011	84.341
2012	128.345
2013	117.344
2014	121.011
2015	124.678
2016	121.011