Year	thousand metric tons of CO2 equivalent
1990	722.5
1991	729.4
1992	725.6
1993	739.3
1994	715.7
1995	788.3
1996	785
1997	736.5
1998	720.8
1999	663.3
2000	636
2001	632
2002	595.7
2003	614.4
2004	631
2005	624.1
2006	656
2007	665.1
2008	689.9
2009	673.9
2010	719.1
2011	820.1
2012	840.8
2013	994.1
2014	1023.6
2015	1062.6
2016	1087.4
2017	1035.4
2018	1057
2019	1116.1
2020	1023.1