Year kt of CO2 equivalent 1990 3956.222143 1991 6503.022857 1992 9091.216071 1993 11480.83179 1994 14083.2175 1995 14441.24083 1996 14708.17417 1997 15054.115 1998 15262.78333 1999 15594.81167 2000 15902.22 2001 15402.94552 2002 15150.24353 2003 14120.72405 2004 12896.52206 2005 13114.74258 2006 12427.9106 2007 11517.73361 2008 10498.25913 2009 9496.119643 2010 8703.230159 2011 8161.303175 2012 7507.56869 2013 7852.256883 2014 7371.587576 2015 7266.493269 2016 7975.878169 2017 7794.963069 2018 7734.040469 2019 7780.217869 2020 7980.365269