Year	thousand metric tons of CO2 equivalent
1990	4986.4
1991	5165.6
1992	5352.7
1993	5548.5
1994	5745.3
1995	5940.3
1996	6132.2
1997	6321
1998	6509.6
1999	6700.6
2000	6896.9
2001	7101.1
2002	7307.7
2003	7519.9
2004	7734.5
2005	7952.3
2006	8175.6
2007	8404.2
2008	8641.8
2009	8855.4
2010	9104.8
2011	9363.1
2012	9619.6
2013	9875.5
2014	10161.8
2015	10368.9
2016	10615.3
2017	10865.8
2018	11051.1
2019	11308.4
2020	11604.6