Year	thousand metric tons of CO2 equivalent
1990	60.9625
1991	1.57
1992	1.4525
1993	1.4475
1994	1.5225
1995	1.3725
1996	1.825
1997	1.3725
1998	1.1975
1999	1.32
2000	1.32
2001	1.3975
2002	1.6225
2003	1.7325
2004	1.6825
2005	1.7025
2006	1.695
2007	1.8325
2008	1.8375
2009	1.9425
2010	1.995
2011	1.9925
2012	2.095
2013	2.095
2014	2.095
2015	2.09
2016	2.135
2017	2.2075
2018	2.22
2019	2.2475
2020	2.2775