Year	thousand metric tons of CO2 equivalent
1990	495.9757
1991	498.441529
1992	509.072557
1993	519.912186
1994	529.083015
1995	537.806844
1996	504.350676
1997	486.897108
1998	482.644941
1999	529.022973
2000	524.741005
2001	677.173499
2002	699.320393
2003	702.067487
2004	653.916181
2005	600.043275
2006	680.77703
2007	674.315985
2008	615.19834
2009	663.152095
2010	692.24245
2011	692.013964
2012	757.285878
2013	707.440393
2014	730.932707
2015	760.057221
2016	722.454217
2017	735.988012
2018	770.203008
2019	763.204603
2020	765.861398