Year	thousand metric tons of CO2 equivalent
1990	2118.45
1991	1939.375
1992	1753.6
1993	1579.425
1994	1429.65
1995	1282.875
1996	1137.9
1997	996.025
1998	853.55
1999	710.575
2000	572.9
2001	595.416667
2002	620.633333
2003	645.75
2004	666.666667
2005	692.883333
2006	717.3
2007	760.575
2008	792.85
2009	814.725
2010	846.9
2011	871.484066
2012	895.868132
2013	915.352198
2014	949.036264
2015	988.82033
2016	992.51502
2017	991.20971
2018	981.004401
2019	978.299091
2020	968.993782