Year	thousand metric tons of CO2 equivalent
1990	5220.845
1991	4873.3
1992	4656.1725
1993	4459.625
1994	4701.115
1995	5190.1075
1996	5904.0975
1997	5638.1
1998	5188.995
1999	5155.8
2000	4993.5875
2001	5936.96
2002	5925.7225
2003	2564.3475
2004	2829.1875
2005	3374.28
2006	4331.935
2007	3376.7525
2008	7536.4925
2009	3289.7225
2010	8711.73
2011	10796.0775
2012	4841.94
2013	4267.44
2014	2777.1375
2015	2531.615
2016	2103.2325
2017	3475.0525
2018	2418.48
2019	1508.1575
2020	3052.3425