Year kt of CO2 equivalent 1990 4416.452657 1991 4591.093027 1992 4507.655898 1993 4363.351269 1994 4346.90914 1995 4331.311954 1996 4190.053254 1997 4110.267054 1998 4431.660854 1999 4479.392154 2000 4932.643454 2001 4722.490827 2002 4185.450701 2003 4445.115575 2004 4605.787948 2005 4992.837822 2006 5469.782585 2007 5121.627348 2008 4308.204612 2009 5654.946875 2010 5301.691638 2011 7567.853912 2012 8292.651185 2013 4830.795958 2014 4449.740731 2015 4333.240504 2016 4685.975838 2017 4622.896171 2018 4208.204004 2019 3812.544338 2020 5335.779671