Year kt of CO2 equivalent 1990 42.616712 1991 44.241505 1992 45.866297 1993 47.49109 1994 49.115883 1995 50.740675 1996 52.462663 1997 54.187151 1998 55.909138 1999 57.631126 2000 59.353114 2001 61.599695 2002 63.846275 2003 66.092856 2004 68.339437 2005 70.586018 2006 74.442077 2007 78.298136 2008 82.154195 2009 86.010254 2010 89.866313 2011 94.781521 2012 99.69673 2013 104.611938 2014 109.527146 2015 114.442355 2016 119.086928 2017 123.731501 2018 128.376074 2019 133.020647 2020 137.66522