Year	thousand metric tons of CO2 equivalent
1990	220818.13
1991	221985.005
1992	225419.4925
1993	225635.51249999998
1994	230381.385
1995	232401.2575
1996	232739.6575
1997	231824.4775
1998	230881.5625
1999	229031.07
2000	226050.25749999998
2001	225982.995
2002	226213.0025
2003	224832.72999999998
2004	226395.1325
2005	228306.3625
2006	228503.6525
2007	227990.91
2008	228643.72749999998
2009	224722.65250000003
2010	225163.0875
2011	220641.7125
2012	218596.4775
2013	216078.7275
2014	216222.78249999997
2015	215794.88
2016	221892.845
2017	222981.825
2018	226449.02250000002
2019	225891.7825
2020	226054.33000000002