Year kt of CO2 equivalent 1990 15855628.423355 1991 16022122.598095 1992 15966771.232569989 1993 16049523.401349997 1994 16083307.285714 1995 16661327.736860998 1996 16871228.393842995 1997 16973888.644855004 1998 17153529.10195601 1999 17224601.952709004 2000 17727684.237668995 2001 18102125.378451005 2002 18595711.556696 2003 19728949.188184995 2004 20928916.34885799 2005 22079047.735996988 2006 23171542.269745003 2007 24267424.427564006 2008 24884085.980947975 2009 25288020.901704997 2010 26796965.399262 2011 28159816.927173 2012 28817809.220747996 2013 29471027.340783 2014 29853352.181493007 2015 29744748.02572402 2016 29974757.071769 2017 30661395.640925996 2018 31604801.69024501 2019 31969436.76397701 2020 31455739.15780101