Year	thousand metric tons of CO2 equivalent
1990	11.1154
1991	11.2942
1992	11.2942
1993	11.5922
1994	11.92
1995	12.2478
1996	12.2776
1997	12.5458
1998	12.6352
1999	12.8736
2000	12.6054
2001	12.963
2002	13.2014
2003	13.5888
2004	13.6484
2005	13.7676
2006	13.8272
2007	13.7974
2008	13.6484
2009	13.5888
2010	8.3142
2011	8.3738
2012	8.5228
2013	8.493
2014	8.4334
2015	8.3738
2016	8.6718
2017	8.4036
2018	8.344
2019	7.8672
2020	7.5692