Year	thousand metric tons of CO2 equivalent
1990	2516.5
1991	2459
1992	2637.8
1993	2748.3
1994	2754
1995	2775.1
1996	2806
1997	2949.4
1998	3034.2
1999	3062.9
2000	3124.5
2001	3167.6
2002	3236.2
2003	3301.9
2004	3288.6
2005	3514.5
2006	3608
2007	3709.1
2008	3844.6
2009	3851.9
2010	3963.1
2011	4048.6
2012	3902.9
2013	4467.2
2014	4555.4
2015	4525.9
2016	4658.1
2017	4686.3
2018	4636.9
2019	4820.7
2020	4655.4