Year	thousand metric tons of CO2 equivalent
1990	556228.7288739999
1991	543620.5797250001
1992	536694.5432000001
1993	535145.4796
1994	541565.1744
1995	538320.2822
1996	545728.8900000001
1997	542318.0714
1998	545777.9110000001
1999	559649.7215999998
2000	557720.857
2001	563432.0270000002
2002	555478.2580000001
2003	522865.8234000001
2004	547924.9712
2005	519091.86200000014
2006	539571.8822
2007	542222.3836
2008	514683.9651999999
2009	513681.76139999996
2010	509400.9318000001
2011	564953.1978
2012	566809.4100000001
2013	527893.2920000001
2014	542114.4777999998
2015	539995.9361999999
2016	527643.6872
2017	549859.3488
2018	543984.1894
2019	526192.4569999999
2020	516648.08320000017