Year	thousand metric tons of CO2 equivalent
1990	7995
1991	8666.7
1992	8704.5
1993	8738
1994	9963.3
1995	10567.7
1996	10935.8
1997	10995.5
1998	11089.2
1999	10200.6
2000	9354.2
2001	9146.9
2002	8644.3
2003	9515.3
2004	9253.7
2005	8921.8
2006	7983.9
2007	7718.4
2008	7860.3
2009	7792.4
2010	7975.2
2011	7777.1
2012	7512.2
2013	7176
2014	7325.2
2015	7409.6
2016	7383.2
2017	6586.5
2018	6199.7
2019	6883.9
2020	6536.5