Year	thousand metric tons of CO2 equivalent
1990	18145.90713
1991	17321.02167
1992	15797.60963
1993	14577.08902
1994	13722.60142
1995	11599.05242
1996	10179.31062
1997	8837.909427
1998	7458.725627
1999	6918.887403
2000	6685.868429
2001	7438.499821
2002	11836.41562
2003	8646.795819
2004	9649.599624
2005	10011.05122
2006	10947.75583
2007	10064.34242
2008	10338.44082
2009	9593.212615
2010	11049.69881
2011	10000.53181
2012	9774.572419
2013	8893.664368
2014	10224.85388
2015	10886.73155
2016	9989.529875
2017	13374.20437
2018	10850.65147
2019	11865.66376
2020	11597.46426