Year	thousand metric tons of CO2 equivalent
1990	5.7514
1991	5.662
1992	5.6024
1993	5.6024
1994	5.7812
1995	5.9004
1996	5.6918
1997	5.5726
1998	5.4534
1999	5.6918
2000	5.1256
2001	5.2448
2002	5.4534
2003	5.5428
2004	5.4832
2005	5.3938
2006	5.6918
2007	5.7514
2008	5.9004
2009	5.9898
2010	5.7812
2011	5.7812
2012	5.811
2013	5.811
2014	5.8408
2015	5.8408
2016	5.8408
2017	5.8408
2018	5.96
2019	6.0792
2020	6.0792