Year	thousand metric tons of CO2 equivalent
1990	2734.3
1991	2696
1992	1967.7
1993	1711.3
1994	1420.5
1995	1399.1
1996	1110.9
1997	1228.9
1998	1154.1
1999	1009
2000	983.7
2001	994.5
2002	1041.9
2003	1102
2004	1046.1
2005	1053.1
2006	1146.9
2007	1269.2
2008	1271.7
2009	1098.3
2010	1141.9
2011	1186
2012	1198.3
2013	1201
2014	1054.8
2015	886
2016	938
2017	859.3
2018	897.5
2019	856.3
2020	832.3