Year	thousand metric tons of CO2 equivalent
1990	253820.755
1991	259815.9488
1992	264263.0922
1993	254129.9598
1994	266558.616
1995	305820.6822
1996	328111.9166
1997	296930.0906
1998	302426.1046
1999	315402.6934
2000	304416.0294
2001	303734.414
2002	318414.1324
2003	316773.7318
2004	326404.5554
2005	331105.863
2006	334827.4062
2007	335383.653
2008	343003.6024
2009	346463.7996
2010	349602.0674
2011	348879.5366
2012	352890.4378
2013	353509.7414
2014	354143.7364
2015	358003.641
2016	356523.8326
2017	349023.7686
2018	339815.3004
2019	326524.8282
2020	323175.5764