Year	thousand metric tons of CO2 equivalent
1990	3080.944566
1991	2906.722317
1992	1953.228647
1993	2333.906017
1994	2388.860988
1995	2455.990103
1996	2501.605496
1997	2314.868489
1998	2187.372282
1999	2402.051276
2000	2832.682069
2001	2687.336594
2002	3355.43112
2003	3873.649645
2004	3925.63017
2005	4302.415296
2006	4881.59395
2007	4757.604404
2008	5322.181258
2009	5423.897711
2010	5547.715365
2011	5462.628508
2012	5549.574451
2013	5647.591794
2014	5884.709737
2015	6497.68968
2016	6009.263717
2017	5990.882953
2018	5811.15839
2019	6209.155827
2020	5327.152463