Year	thousand metric tons of CO2 equivalent
1990	5452.8
1991	5621.8
1992	5683.7
1993	5700.2
1994	5867.6
1995	5926
1996	6121.3
1997	6054.3
1998	6055.8
1999	6259.6
2000	6327.1
2001	6336.2
2002	6571.1
2003	6810.1
2004	6863.9
2005	6934.7
2006	7207
2007	7540.1
2008	7401.7
2009	7169.2
2010	7450.9
2011	8080.7
2012	8278.8
2013	8254.5
2014	8164.4
2015	7856.7
2016	7890.6
2017	7921.5
2018	7641.7
2019	7343.2
2020	7032.7