Year	thousand metric tons of CO2 equivalent
1990	9832.5696
1991	9468.205
1992	9409.8268
1993	9293.875
1994	9407.264
1995	9239.788
1996	8840.2594
1997	8778.7522
1998	9082.3248
1999	9546.132
2000	8811.6514
2001	8880.7874
2002	9171.8142
2003	9838.5892
2004	10298.1648
2005	10184.0308
2006	9764.1786
2007	15461.3724
2008	15448.767
2009	14955.9346
2010	15101.6268
2011	15591.4196
2012	15661.241
2013	15450.9722
2014	15589.0654
2015	15478.0902
2016	16971.1596
2017	15905.6308
2018	16414.3764
2019	18942.817
2020	19652.7126