Year	thousand metric tons of CO2 equivalent
1990	223914.18829999992
1991	216814.84232099995
1992	209729.06339400003
1993	203313.18000000002
1994	200001.34249999997
1995	198047.3825
1996	197769.3725
1997	197224.74749999997
1998	195023.6625
1999	194425.91
2000	195236.33000000002
2001	191671.74
2002	190210.6975
2003	186372.86750000002
2004	184769.18750000003
2005	182530.445
2006	180589.16999999998
2007	181526.75250000003
2008	181242.285
2009	180712.79000000004
2010	178888.02000000005
2011	175957.885
2012	175543.7875
2013	175359.3225
2014	176902.11000000002
2015	178543.08000000002
2016	178974.66750000004
2017	177655.84499999997
2018	173739.50499999998
2019	172247.69499999998
2020	171236.835