Year	thousand metric tons of CO2 equivalent
1990	344809.18439999997
1991	351896.0416000001
1992	360004.38319999987
1993	351109.1428000001
1994	367744.7246
1995	409128.4018000001
1996	436069.15140000003
1997	403225.17079999996
1998	411054.5844
1999	424655.9302
2000	415035.8644
2001	412297.4530000001
2002	430633.095
2003	434149.6141999999
2004	447963.64259999996
2005	451798.39599999995
2006	457617.5016
2007	464515.7546
2008	470754.44419999997
2009	484030.9104
2010	486648.33379999985
2011	487409.247
2012	495321.32580000005
2013	496646.4126
2014	500001.68399999995
2015	504673.6683999999
2016	506132.40819999995
2017	509722.6526
2018	501290.41480000014
2019	486110.53319999995
2020	490102.1537999999