Year	thousand metric tons of CO2 equivalent
1990	6164.500793
1991	6133.520642
1992	6150.51849
1993	6232.301538
1994	6291.674986
1995	6383.351635
1996	6793.367268
1997	6893.462901
1998	7308.216734
1999	7912.856167
2000	8031.6066
2001	7570.412606
2002	7770.212411
2003	7974.839817
2004	9024.535623
2005	9210.776428
2006	9323.790131
2007	9441.273835
2008	10065.44694
2009	9825.032641
2010	10385.28474
2011	10543.92353
2012	10766.84092
2013	11184.91851
2014	11445.5031
2015	11860.54109
2016	13323.44756
2017	13236.39643
2018	13419.98889
2019	13985.14056
2020	15086.90083