Year kt of CO2 equivalent 1990 528077.742 1991 534386.7109 1992 535736.2773 1993 539941.7361 1994 544615.5375 1995 555229.73 1996 565094.8625 1997 574291.5675 1998 582210.4 1999 589663.7275 2000 594662.7625 2001 597332.605 2002 591021.88 2003 599191.17 2004 606634.45 2005 620079.605 2006 629406.715 2007 642567.15 2008 651240.1975 2009 651518.635 2010 658933.4275 2011 666187.7766 2012 665447.8733 2013 669582.0974 2014 674057.7366 2015 678829.1432 2016 684445.8012 2017 686785.3417 2018 695493.5672 2019 696431.7852 2020 697654.6707