Year	thousand metric tons of CO2 equivalent
1990	682.1
1991	687
1992	697.4
1993	706.7
1994	704
1995	731.4
1996	765.3
1997	755.8
1998	750.5
1999	699.5
2000	747.8
2001	712
2002	711.9
2003	730
2004	737.6
2005	686.9
2006	683.2
2007	696
2008	692.7
2009	699.8
2010	751.3
2011	872.5
2012	895.2
2013	824.9
2014	796.2
2015	804.6
2016	830.5
2017	846.2
2018	794.1
2019	794.7
2020	827.2