Year	thousand metric tons of CO2 equivalent
1990	349.6575
1991	431.775
1992	544.2975
1993	569.3475
1994	482.8475
1995	494.85
1996	462.1
1997	421.4725
1998	370.0425
1999	394.0275
2000	340.075
2001	335.4325
2002	354.26
2003	356.0325
2004	361.715
2005	407.5675
2006	409.8625
2007	474.7475
2008	570.4275
2009	485.975
2010	479.3
2011	492.765
2012	491.265
2013	510.665
2014	561.8775
2015	556.0325
2016	652.1225
2017	609.285
2018	603.195
2019	594.61
2020	581.3975