Year	thousand metric tons of CO2 equivalent
1990	5148.691
1991	5382.2144
1992	5607.9154
1993	5499.19
1994	5313.8106
1995	4844.0774
1996	5038.35
1997	5292.3012
1998	5458.7962
1999	5484.2172
2000	5721.1004
2001	5872.861817
2002	6027.410234
2003	6207.67945
2004	6456.910267
2005	6340.560684
2006	6495.985727
2007	6897.769371
2008	6520.241015
2009	6362.959658
2010	6689.028302
2011	7382.371526
2012	7797.036949
2013	7796.960773
2014	7836.271397
2015	8326.43702
2016	8374.673658
2017	8234.288696
2018	8105.099734
2019	8206.529572
2020	8249.19921