Year	thousand metric tons of CO2 equivalent
1990	7529.202297
1991	7279.686785
1992	6092.778695
1993	6049.950453
1994	5853.732667
1995	6163.088906
1996	6146.139633
1997	6069.1796
1998	5970.907205
1999	5550.699249
2000	4829.298694
2001	4572.926083
2002	4466.343697
2003	4402.868534
2004	4364.677789
2005	3915.910811
2006	4050.715
2007	4072.4425
2008	3934.5775
2009	3745.26
2010	3624.1025
2011	3535.865
2012	3471.405
2013	3396.89
2014	3481.3925
2015	3435.3475
2016	3306.595
2017	3305.1975
2018	3237.1275
2019	3283.38
2020	3279.1125