Year	thousand metric tons of CO2 equivalent
1990	1316.6
1991	1348.8
1992	1399.6
1993	1476.4
1994	1522.1
1995	1568.4
1996	1636.8
1997	1669.9
1998	1714.8
1999	1778.4
2000	1801.6
2001	1826.8
2002	1863.4
2003	1914
2004	2003.9
2005	2001.6
2006	2063.4
2007	2228.9
2008	2213.2
2009	2271
2010	2309
2011	2374.6
2012	2429.3
2013	2493.2
2014	2612.8
2015	2779
2016	2957.8
2017	3159.3
2018	3114.6
2019	3099.2
2020	3109.8