Year	thousand metric tons of CO2 equivalent
1990	630053.692256
1991	600869.210603
1992	536152.373514
1993	523839.7700769999
1994	474574.24583100004
1995	465915.88364899997
1996	464251.558552
1997	439011.35653800005
1998	444168.74027400004
1999	466264.6270969999
2000	499348.39148199995
2001	510865.8483869999
2002	533145.121405
2003	574604.3882360001
2004	593544.5282460001
2005	613216.6655240001
2006	613470.267012
2007	630082.255012
2008	635891.702472
2009	584930.2591540001
2010	611626.810861
2011	644266.6359229999
2012	638485.8969449999
2013	649221.1218859999
2014	640575.2636279999
2015	639939.309606
2016	650699.041968
2017	665822.5735259999
2018	697805.305093
2019	712468.336658
2020	684897.0682229998