Year	thousand metric tons of CO2 equivalent
1990	707
1991	706
1992	729.5
1993	751.4
1994	756.8
1995	775.5
1996	810.3
1997	811.9
1998	831.9
1999	828.1
2000	840.2
2001	859.1
2002	878.9
2003	893.6
2004	904.8
2005	911.4
2006	928.7
2007	984.5
2008	986.9
2009	991.5
2010	975.9
2011	990.7
2012	977.4
2013	953.7
2014	935.6
2015	970.2
2016	960.6
2017	967.3
2018	992.2
2019	993.5
2020	882