Year	thousand metric tons of CO2 equivalent
1990	7.616591
1991	8.244271
1992	8.216351
1993	9.976431
1994	12.392111
1995	11.976791
1996	12.380286
1997	13.46918
1998	13.604474
1999	13.799368
2000	14.232663
2001	14.218242
2002	9.435822
2003	9.451202
2004	9.496382
2005	9.809761
2006	9.371222
2007	9.707483
2008	10.162944
2009	10.082004
2010	10.150065
2011	10.071946
2012	7.907827
2013	7.561508
2014	7.483389
2015	7.43507
2016	7.351311
2017	7.267551
2018	7.213592
2019	7.189432
2020	6.986473