Annual kt
1960 2594922.8049025005
1961 2332386.6839213907
1962 2231339.8239464676
1963 2302767.2258693874
1964 2358042.729001106
1965 2466094.2881854665
1966 2561201.9683557833
1967 2488613.849053914
1968 2545196.934496528
1969 2698184.835211518
1970 2976570.0485590138
1971 3111968.910381579
1972 3223528.6324778227
1973 3272663.4387547118
1974 3299541.88238812
1975 3561753.409225265
1976 3648635.777496443
1977 3823671.583717927
1978 3980238.146323162
1979 4075490.555901552
1980 4193064.1322764433
1981 4042730.6692999424
1982 4256806.592752261
1983 4394413.144779739
1984 4605207.0835764995
1985 5066195.563534637
1986 5256944.185941986
1987 5464225.843509174
1988 5656793.870507849
1989 5603364.103795375
1990 5324689.9768586485
1991 5297867.7267678
1992 4791927.9012427
1993 4838560.32645028
1994 4910780.566552777
1995 5115791.622830977
1996 5256712.253970118
1997 5135290.984398212
1998 4900397.296836395
1999 4891860.440616145
2000 4949337.950642469
2001 4995299.998529152
2002 5384424.765281744
2003 6086601.69312982
2004 6730159.517569542
2005 7422508.026088457
2006 8099323.041498049
2007 8285464.394161576
2008 9268937.830703853
2009 9061553.590166219
2010 10140538.164167764
2011 11180084.84598386
2012 11562149.639429256
2013 11409528.920835089
2014 11445387.597250398
2015 11429732.117834482
2016 11222886.739940777