Year	thousand metric tons of CO2 equivalent
1990	7740.300816
1991	7399.255039
1992	6596.279106
1993	5759.91
1994	4997.655
1995	4717.855
1996	4604.275
1997	4337.5375
1998	4029.6675
1999	3927.6175
2000	3720.4475
2001	3689.54
2002	3508.0775
2003	3401.2475
2004	3275.4925
2005	3200.315
2006	3140.89
2007	3162.6625
2008	3133.595
2009	3006.5425
2010	2947.6025
2011	2919.4825
2012	2908.515
2013	2915.8025
2014	2952.5125
2015	2996.405
2016	3016.2075
2017	3009.4925
2018	2916.1175
2019	2921.355
2020	2873.465