Annual kt
1960 9511.22637608153
1961 14207.53168602664
1962 17838.442904921576
1963 10682.90931029202
1964 16720.504367215253
1965 17773.454864340645
1966 16834.1006864072
1967 20442.968365351495
1968 21928.458693246237
1969 22094.48408283447
1970 28962.692304747816
1971 35034.81029925753
1972 36157.356895306555
1973 43364.36811507653
1974 39524.99668345361
1975 41870.551244069655
1976 47081.43875024273
1977 54065.68780503801
1978 53165.90337396369
1979 52231.17585818747
1980 51873.009239992825
1981 45059.107723119385
1982 41630.317536744
1983 34130.65798259548
1984 35781.718734760965
1985 35288.147663346426
1986 34676.64368106291
1987 37148.8669237234
1988 37817.15341864751
1989 40682.486364204546
1990 42565.04505252022
1991 43473.86291997678
1992 46485.86216440928
1993 49722.33697655771
1994 48821.46254431018
1995 48966.047329732646
1996 52914.32416242233
1997 55850.50749715492
1998 60499.46444381489
1999 58846.00766693264
2000 59813.61353860588
2001 67109.58424915357
2002 66038.17391615137
2003 69251.8813212662
2004 63760.10284417126
2005 68482.66251774045
2006 78153.48524227104
2007 76576.00123131154
2008 78337.34118760434
2009 72288.48058613938
2010 74969.10026909862
2011 69170.28375328696
2012 65246.79787987472
2013 71615.56782621956
2014 62522.052770035494
2015 61371.11455224915
2016 64139.98508896838