Year	thousand metric tons of CO2 equivalent
1990	10.6625
1991	10.27
1992	10.36
1993	10.11
1994	9.87
1995	10.7125
1996	10.665
1997	10.3225
1998	12.61
1999	13.335
2000	9.86
2001	8.545
2002	9.7475
2003	6.165
2004	18.71
2005	11.16
2006	9.4925
2007	10.4425
2008	16.765
2009	10.51
2010	7.2825
2011	16.66
2012	8.8675
2013	15.075
2014	8.36
2015	10.12
2016	10.6975
2017	13.8675
2018	6.995
2019	7.3575
2020	11.5875