Year	thousand metric tons of CO2 equivalent
1990	615.8
1991	625.4
1992	699.9
1993	718.8
1994	739.2
1995	832.5
1996	1094.4
1997	1177.7
1998	1174
1999	1325.2
2000	1329.1
2001	1387
2002	1655.5
2003	1504.3
2004	1770.3
2005	2026
2006	2309.7
2007	2197.3
2008	2207.2
2009	2122.1
2010	2213.6
2011	2354.4
2012	2401
2013	2447.9
2014	2347.5
2015	2097.8
2016	2189.9
2017	2341.3
2018	2208.3
2019	2304.2
2020	2331.3