Annual kt
1963 3325.361593847711
1964 3994.8974852264446
1965 4346.403828200279
1966 4921.088801633694
1967 5451.13804897519
1968 7465.325188872881
1969 8642.592464547155
1970 10059.776767965475
1971 10578.667083783994
1972 13457.67141671255
1973 17301.92332637878
1974 18105.36639603326
1975 19740.149864149666
1976 18122.10479331773
1977 21397.251195312037
1978 26056.105106155726
1979 35993.133627368436
1980 37142.503574235256
1981 35206.42895499842
1982 36138.19973716716
1983 36673.82845027016
1984 35959.656832799505
1985 42113.80756772237
1986 43754.17050160026
1987 42922.83010313833
1988 46800.558807373505
1989 54801.51270934937
1990 53222.52389884786
1991 57680.517042277934
1992 70256.63286867515
1993 78322.13742422783
1994 79243.44756384005
1995 80622.71888396128
1996 84571.96059352714
1997 89760.39137976443
1998 82621.58474241823
1999 87847.72997881507
2000 95379.84445353961
2001 93973.63424044727
2002 98996.48978857807
2003 106950.67359900677
2004 121582.37895702777
2005 128422.7668838297
2006 142518.58931670955
2007 163160.5894429805
2008 167200.7263982114
2009 171776.74627858354
2010 190154.3783584246
2011 210663.3347114729
2012 230704.7456968416
2013 213437.08700512288
2014 259161.97330044364
2015 256409.23428174562
2016 246317.60898609864