Year	thousand metric tons of CO2 equivalent
1990	10371.33103
1991	10019.76518
1992	9977.585719
1993	9876.432661
1994	10000.0204
1995	9854.343147
1996	9477.166459
1997	9433.311171
1998	9756.635683
1999	10237.1948
2000	9521.766108
2001	9603.975119
2002	9916.87493
2003	10593.62294
2004	11074.67155
2005	10981.01056
2006	10591.834
2007	16309.90344
2008	16321.57367
2009	15868.21691
2010	16050.38475
2011	16564.43563
2012	16665.41511
2013	16503.20439
2014	16686.65567
2015	16637.53855
2016	18173.48503
2017	17122.1333
2018	17671.35598
2019	20241.67365
2020	20969.04632