Year kt 1990 304614.720181 1991 300135.943094 1992 296834.69172299997 1993 305267.779142 1994 314596.28708499996 1995 329784.557767 1996 342368.17832500004 1997 358278.381587 1998 367651.937441 1999 353173.100746 2000 357967.510652 2001 395061.523617 2002 406488.16225700005 2003 428637.779164 2004 459742.334363 2005 460840.910225 2006 467829.222212 2007 488797.648679 2008 522352.252288 2009 504690.37110800005 2010 532614.140224 2011 525337.8892890001 2012 546775.8650000001 2013 568547.519 2014 591680.972 2015 576265.992 2016 580219.2420000001 2017 590905.482 2018 598720.9574999999 2019 610723.5 2020 544952.5029999999