Year	thousand metric tons of CO2 equivalent
1990	3169.0214
1991	3244.4154
1992	3207.3442
1993	3228.234
1994	3226.7142
1995	3234.5814
1996	3496.8512
1997	3554.3652
1998	4115.8866
1999	3512.079
2000	4133.6474
2001	3520.7806
2002	3443.4794
2003	3800.8112
2004	3329.6434
2005	4288.22
2006	4154.0604
2007	3893.3998
2008	3918.4318
2009	3745.4726
2010	3980.2668
2011	4365.5212
2012	4217.2364
2013	4561.784
2014	4431.6474
2015	4670.3752
2016	4695.884
2017	5020.3464
2018	4845.629
2019	4948.1708
2020	5811.4172