Year	thousand metric tons of CO2 equivalent
1990	294.346084
1991	335.698664
1992	331.958245
1993	366.293625
1994	359.109806
1995	411.229187
1996	405.07849
1997	430.754193
1998	425.819297
1999	442.455
2000	397.8046
2001	407.336
2002	435.952
2003	472.4914
2004	525.703
2005	427.93318
2006	429.596237
2007	437.184295
2008	499.590353
2009	452.72781
2010	495.550668
2011	450.50343
2012	502.690792
2013	539.176153
2014	518.799915
2015	574.581877
2016	497.276117
2017	494.274957
2018	572.368797
2019	580.385037
2020	567.141277