Year	thousand metric tons of CO2 equivalent
1990	2595.5
1991	2485.6
1992	2526.8
1993	2527.5
1994	2359.3
1995	2272.3
1996	2176.2
1997	2119.3
1998	2055.6
1999	1983.7
2000	1928.6
2001	1914.7
2002	2437.2
2003	2556.8
2004	2424.9
2005	2680.1
2006	2642.5
2007	2865.2
2008	2932
2009	3116.2
2010	3096
2011	3172.9
2012	3140.3
2013	3146.7
2014	3308
2015	3216.6
2016	3318.9
2017	3273
2018	3356.9
2019	3335.6
2020	3216.2