Annual kt
1960 2203386.433080674
1961 2308628.422232709
1962 2456653.032286348
1963 2616637.8623561338
1964 2802895.441511217
1965 3016947.618345019
1966 3228428.943899601
1967 3459316.819141511
1968 3751150.1610304755
1969 4055162.265161792
1970 4670585.121155347
1971 4894614.743989327
1972 5290760.277195182
1973 5620925.925561139
1974 5435316.02609464
1975 5238206.832034539
1976 5484849.61503858
1977 5664856.886524096
1978 5796915.99357944
1979 5820466.8985746885
1980 5469484.109788602
1981 5088092.16359934
1982 4861058.578528746
1983 4755721.225496186
1984 4808207.121241455
1985 4722077.643145121
1986 4870499.602700958
1987 4974569.410821508
1988 5155844.227219037
1989 5276360.331235543
1990 5067473.697930312
1991 5057369.100089426
1992 5185402.024
1993 5253589.889
1994 5340343.774999998
1995 5355279.466000001
1996 5488710.594999999
1997 5537030.654000001
1998 5557298.163
1999 5603605.038999998
2000 5628217.942999999
2001 5645562.852999999
2002 5607675.409000001
2003 5709214.638999998
2004 5752947.280999999
2005 5765121.720999999
2006 5673670.407999998
2007 5601734.868999999
2008 5433181.213999999
2009 5185317.682999998
2010 5181122.634999999
2011 5067665.654999999
2012 5002305.0469999965
2013 4968770.3319999995
2014 4919764.543999998
2015 5160782.164922973
2016 5162407.572378134