Year	thousand metric tons of CO2 equivalent
1990	524.6125
1991	529.255
1992	498.335
1993	495.715
1994	493.395
1995	539.94
1996	523.27
1997	518.9525
1998	513.6925
1999	535.7325
2000	507.06
2001	460.6175
2002	458.52
2003	457.1025
2004	459.3825
2005	526.205
2006	509.8775
2007	517.73
2008	446.6875
2009	479.47
2010	478.8175
2011	472.8325
2012	464.98
2013	470.375
2014	436.2675
2015	420.365
2016	423.08
2017	423.4225
2018	401.53
2019	398.05
2020	373.865