Year	thousand metric tons of CO2 equivalent
1990	4237.3275
1991	4355.7725
1992	4264.54
1993	4112.04
1994	4087.4025
1995	4057.525
1996	3900.785
1997	3807.1175
1998	4115.33
1999	4149.38
2000	4582.05
2001	4362.515
2002	3819.6925
2003	4070.975
2004	4223.465
2005	4600.3325
2006	5070.7025
2007	4714.0725
2008	3891.375
2009	5222.0425
2010	4866.1125
2011	7125.025
2012	7843.9725
2013	4371.1675
2014	3978.9625
2015	3851.4125
2016	4193.06
2017	4119.0925
2018	3693.2125
2019	3286.565
2020	4800.2125