Year	thousand metric tons of CO2 equivalent
1990	1141.8
1991	1362.9
1992	1444.6
1993	1530.2
1994	1645.8
1995	1666.6
1996	1876.3
1997	2108.1
1998	2120.6
1999	2469.4
2000	2821.7
2001	2785.6
2002	2890.2
2003	2900.5
2004	3114
2005	3121.7
2006	2951.8
2007	2706.3
2008	2615.1
2009	2367
2010	2339.8
2011	2016.2
2012	1851.3
2013	1703.9
2014	1622.7
2015	1622.5
2016	1598.8
2017	1568.3
2018	1382.8
2019	1234.7
2020	1014.3