Year	thousand metric tons of CO2 equivalent
1990	5839.964673
1991	4388.088061
1992	4034.633069
1993	3677.7968
1994	3671.062
1995	3536.3064
1996	3713.0204
1997	3439.6352
1998	3295.7012
1999	3226.744
2000	3457.545
2001	3797.5034
2002	2949.5742
2003	3001.3964
2004	3071.0986
2005	3018.8294
2006	2977.5564
2007	3114.547
2008	3066.4498
2009	2992.1882
2010	2994.1252
2011	3107.6334
2012	3550.8786
2013	3580.0528
2014	3644.4506
2015	4055.8992
2016	4121.5188
2017	3810.2578
2018	3672.5818
2019	3589.559
2020	3311.4356