Year	thousand metric tons of CO2 equivalent
1990	3345.0798
1991	3216.9696
1992	3277.5232
1993	3147.774
1994	3397.3192
1995	3679.4954
1996	3709.4444
1997	3747.35
1998	3883.834
1999	3858.653
2000	3748.393
2001	3405.8122
2002	3755.0384
2003	4094.1326
2004	4204.0946
2005	4665.7562
2006	4973.1134
2007	4953.8328
2008	4500.3364
2009	4173.0728
2010	3348.924
2011	3788.5932
2012	3634.408
2013	3031.9116
2014	2913.4268
2015	2742.2556
2016	2655.0608
2017	2245.7578
2018	2130.3126
2019	2705.8698
2020	2782.9922