Year	thousand metric tons of CO2 equivalent
1990	5066.418384
1991	4856.020338
1992	4826.014492
1993	4735.213046
1994	4328.9442
1995	4240.301933
1996	4344.014867
1997	4210.0318
1998	4785.744333
1999	4723.450867
2000	7477.3984
2001	7638.334894
2002	7463.981387
2003	7707.740881
2004	8388.925975
2005	7772.803468
2006	8129.493406
2007	8161.157544
2008	7866.426881
2009	8469.091619
2010	8734.473356
2011	9354.608866
2012	10333.67758
2013	10912.04108
2014	11704.86639
2015	12313.7395
2016	12290.24548
2017	12303.29866
2018	12488.53884
2019	12597.83722
2020	12578.7476