Year	thousand metric tons of CO2 equivalent
1990	47956.86833129
1991	47495.00390855
1992	45466.15876930002
1993	43382.01550441
1994	40867.208003166
1995	40329.595924454006
1996	40646.23680604699
1997	40133.016891402
1998	40343.25388902799
1999	40198.80013586901
2000	40359.846959058996
2001	40511.905186278986
2002	40824.39258520101
2003	41708.56764413
2004	42262.609379035
2005	42541.553038196005
2006	44001.25416969199
2007	44889.766501201004
2008	45014.523048222
2009	43521.39691955701
2010	44578.56252583302
2011	44670.63113729301
2012	45144.09848657799
2013	44397.578298035005
2014	43766.251878063005
2015	44021.991362508
2016	44268.020270266985
2017	44903.020270267
2018	45979.02027026701
2019	46209.72027026699
2020	42974.620270267005