Year	thousand metric tons of CO2 equivalent
1990	4354.7925
1991	4172.88
1992	4364.2275
1993	4443.3075
1994	4264.155
1995	4277.575
1996	4305.5275
1997	4300.3575
1998	4535.045
1999	4748.2975
2000	4756.335
2001	4804.6975
2002	4645.1075
2003	4801.585
2004	5017.12
2005	5053.2025
2006	5191.0875
2007	5293.07
2008	5220.1325
2009	5526.8525
2010	5823.725
2011	6017.78
2012	6345.36
2013	6561.7525
2014	6939.3625
2015	7036.0425
2016	6973.4775
2017	6878.9375
2018	6811.6525
2019	6886.11
2020	7058.59