Year	thousand metric tons of CO2 equivalent
1990	1578.8
1991	1629.3
1992	1681.6
1993	1734.8
1994	1787.5
1995	1843.3
1996	1898.5
1997	1952.2
1998	2008.3
1999	2064.5
2000	2121.6
2001	2177.9
2002	2236.8
2003	2294.3
2004	2358.5
2005	2425.3
2006	2494.8
2007	2564.3
2008	2636
2009	2715.4
2010	2795.4
2011	2870
2012	2946.2
2013	3030.1
2014	3114.4
2015	3200.3
2016	3282.5
2017	3361
2018	3445.2
2019	3531.7
2020	3603