Year kt 1990 180897.955181 1991 177458.75689400002 1992 162884.60472300005 1993 154687.81814200006 1994 151769.08808500002 1995 149647.861767 1996 144403.23332499998 1997 143631.874587 1998 142412.54244099997 1999 149740.174746 2000 156945.23765199998 2001 162517.45161700004 2002 161348.83225700003 2003 168692.45316400004 2004 174600.1063630001 2005 192793.73022500004 2006 201912.75021200004 2007 197405.36467900002 2008 211118.76228800006 2009 196252.771108 2010 196253.70722399998 2011 181921.82718900003 2012 170273.61 2013 155154.11 2014 160504.77999999997 2015 144653.00999999995 2016 149210.28000000003 2017 179017.84999999998 2018 183120.33999999997 2019 191195.28000000003 2020 179664.93600000002