Year	thousand metric tons of CO2 equivalent
1990	5.856214
1991	6.276255
1992	6.636696
1993	6.371337
1994	6.552978
1995	6.645219
1996	6.840359
1997	6.9759
1998	6.962441
1999	7.157581
2000	7.591122
2001	8.284057
2002	9.096193
2003	9.729529
2004	9.975464
2005	10.3406
2006	10.415372
2007	11.086144
2008	11.786716
2009	12.427688
2010	12.29386
2011	12.669701
2012	13.313743
2013	14.374984
2014	14.840225
2015	14.977667
2016	15.123302
2017	16.431137
2018	16.010572
2019	16.126407
2020	17.434243