Year	thousand metric tons of CO2 equivalent
1990	4885.859
1991	4646.6544
1992	4452.567
1993	3908.568
1994	3672.0156
1995	3625.1402
1996	3572.3048
1997	3683.131
1998	3561.9344
1999	3337.6596
2000	3296.2078
2001	3449.1116
2002	3154.6876
2003	2941.1408
2004	3041.4476
2005	2835.4402
2006	3021.3326
2007	2989.5956
2008	2997.0158
2009	2941.0514
2010	3162.0184
2011	3202.1888
2012	3184.3684
2013	3292.8106
2014	3378.277
2015	3259.1068
2016	3211.8738
2017	3173.0742
2018	3095.8326
2019	3140.0558
2020	2849.178