Year kt 1960 138070.8827109336 1961 142804.1006235261 1962 146802.81733972504 1963 151597.91242015996 1964 160867.6222812883 1965 174691.72787140327 1966 173143.57816918317 1967 178620.75827173307 1968 187661.02165493494 1969 190974.80756594625 1970 196893.21819724207 1971 211291.5021255291 1972 216361.39510359266 1973 216902.24556679645 1974 220317.5278686306 1975 224539.0032599945 1976 240300.59228403153 1977 247157.68678048396 1978 251023.7516589943 1979 277926.54012769775 1980 298858.0020015342 1981 332935.9280216187 1982 351014.3048971973 1983 365110.0296655422 1984 400534.9512052502 1985 413707.93101133325 1986 427554.40857722826 1987 435922.7508211892 1988 451317.7429214545 1989 437036.4085342639 1990 410186.65138523054 1991 427287.69508667244 1992 402738.05552270677 1993 445215.1832792617 1994 460573.27673975733 1995 484831.54164338217 1996 490563.6758704453 1997 502764.32755706867 1998 492823.91738784034 1999 509271.1632115528 2000 511274.08167848695 2001 510166.64792295994 2002 492378.82439518825 2003 536612.5899030338 2004 574143.4668905841 2005 565665.5051257838 2006 573327.463070722 2007 587724.1018925735 2008 624245.9160403808 2009 611439.7032454802 2010 607317.5544848543 2011 598691.7727595344 2012 594031.6213272243 2013 593205.5035733149 2014 626313.7612492273 2015 587353.8361497892 2016 605867.3468399667