Year	thousand metric tons of CO2 equivalent
1990	466242.00323
1991	467554.769268
1992	467601.396106
1993	466671.41004299995
1994	475840.1101
1995	482858.01689399994
1996	491937.72963300004
1997	498863.16235400003
1998	501128.4930339999
1999	496517.923528
2000	502249.23033800005
2001	504805.101045
2002	500936.61905200005
2003	505641.52410100005
2004	507159.4365779999
2005	510760.311401
2006	517104.12425
2007	527301.933772
2008	534815.7002740001
2009	525802.4591029999
2010	552212.113044
2011	567993.402345
2012	585803.771775
2013	599764.8128999999
2014	627173.226671
2015	625961.63783
2016	608681.27777
2017	625195.8865850001
2018	666470.0954029999
2019	708681.5042250002
2020	661332.4130430002