Annual kt
1960 4497.692319016887
1961 4235.124334987794
1962 3418.246162452835
1963 3408.5214223036087
1964 4468.518098569211
1965 3992.0058312571527
1966 4177.908063595109
1967 4838.35020479574
1968 4740.605756214009
1969 5918.426361623881
1970 6740.1582862129835
1971 6422.226291580295
1972 7981.3512436458295
1973 8372.593951667684
1974 9746.833963594449
1975 12128.523948677484
1976 9913.112114503734
1977 10108.733468514662
1978 9683.257023540897
1979 9737.052895893901
1980 10446.180304183512
1981 11858.883209147965
1982 13921.722745116816
1983 14596.774656159021
1984 16000.68696390622
1985 15350.093455438007
1986 17786.15035180771
1987 19131.362493377328
1988 18705.786288589847
1989 18647.070767935104
1990 18025.66484100575
1991 19219.547094318834
1992 17140.039071130064
1993 19415.26549650131
1994 20999.597250666848
1995 20116.21227258667
1996 23328.084828758627
1997 22238.256622105357
1998 25020.441277290967
1999 24607.197960631274
2000 27879.50840999466
2001 29542.091986323194
2002 31555.451866327978
2003 31276.752885324928
2004 31965.689370630145
2005 34336.01629909285
2006 35270.6574050314
2007 36942.412372869934
2008 34653.98698461834
2009 29567.119221657616
2010 32764.989907703613
2011 26986.028335429422
2012 25557.384447712604
2013 24541.03376249124
2014 29283.062920114407
2015 30903.52399721119
2016 29240.028770674424