Year	thousand metric tons of CO2 equivalent
1990	336936.5275
1991	341193.4625
1992	341312.645
1993	338743.42
1994	346359.2825
1995	366253.3
1996	386773.8675
1997	349737.885
1998	366923.4
1999	373880.005
2000	372889.155
2001	362552.21
2002	353360.4575
2003	344471.7275
2004	353352.2625
2005	356423.885
2006	354808.6025
2007	345704.3275
2008	350413.175
2009	348441.7975
2010	346056.275
2011	341015.35
2012	338531.0175
2013	337584.1825
2014	337906.7225
2015	341378.215
2016	342191.46
2017	335875.4425
2018	334420.0325
2019	324905.015
2020	330790.31