Year kt 1990 11301942.62 1991 11261858.729999999 1992 11202035.020000001 1993 11190404.830000002 1994 11255283.549999997 1995 11385861.270000001 1996 11654927.099999996 1997 11878876.620000001 1998 11862048.600000001 1999 11932534.799999999 2000 12205401.5 2001 12242579.100000001 2002 12138747.3 2003 12348057.200000001 2004 12433283.200000001 2005 12434543.599999996 2006 12321777.600000001 2007 12451551.7 2008 12108570.099999994 2009 11325785.799999999 2010 11794117.9 2011 11547695.050000003 2012 11341919.519999996 2013 11411367.770000001 2014 11155172.57 2015 11014655.470000003 2016 10907463.369999997 2017 10811083.27 2018 10882237.97 2019 10513545.907000002 2020 9555830.370000001