Annual kt
1960 2351678.629486628
1961 2080680.8870285077
1962 1966356.566473921
1963 2021137.059627513
1964 2064604.7111113162
1965 2169475.492609178
1966 2259587.0375512647
1967 2178504.847183101
1968 2217020.5791474152
1969 2349819.975088395
1970 2627344.7435928416
1971 2755568.679684748
1972 2850342.932756406
1973 2892987.157482583
1974 2909610.002505071
1975 3146734.839046548
1976 3213755.550438305
1977 3371140.0464925445
1978 3511224.7142068907
1979 3593882.8297790107
1980 3684914.9592068065
1981 3581445.207827836
1982 3784885.649596792
1983 3909584.960824997
1984 4100968.9832269764
1985 4544673.193542446
1986 4730601.784954813
1987 4919947.92833301
1988 5122896.778820321
1989 5090221.267584584
1990 4909370.910582686
1991 4902388.378634164
1992 4400569.984219384
1993 4456434.844264886
1994 4549178.359780345
1995 4746904.52848758
1996 4876601.998969624
1997 4763374.714693521
1998 4560199.311911918
1999 4567539.795801365
2000 4643107.296528427
2001 4691567.860684289
2002 5081828.918307768
2003 5773910.141246809
2004 6415820.253759243
2005 7106031.659705804
2006 7761180.252062222
2007 7950202.708057797
2008 8929219.837916786
2009 8747092.606052967
2010 9802732.335901206
2011 10824972.640826276
2012 11220020.449225783
2013 11062809.54307165
2014 11113868.424924875
2015 11099565.81819081
2016 10892197.032110617