Year	thousand metric tons of CO2 equivalent
1990	6818.535218
1991	6778.5312969999995
1992	6606.627378
1993	4786.023457
1994	3388.8195370000003
1995	3186.515618
1996	3569.24295
1997	3459.470283
1998	3572.197615
1999	4037.824948
2000	4643.85228
2001	4904.481063
2002	5497.709844999999
2003	6668.3386279999995
2004	6988.567411
2005	7616.496194
2006	8714.818093
2007	8851.639993
2008	8890.861891
2009	8947.98379
2010	9134.305689
2011	8982.940874
2012	8930.676059000001
2013	8905.811244
2014	8766.246428999999
2015	8241.381615
2016	7326.684504999999
2017	7332.987395
2018	7399.590285
2019	7419.093175
2020	6680.096066