Year	thousand metric tons of CO2 equivalent
1990	3853.6
1991	3862.5
1992	4196.8
1993	4401.5
1994	4600.3
1995	4609
1996	4756.599999999999
1997	4869.899999999999
1998	4973.6
1999	5021
2000	8042.8600000000015
2001	8282.66
2002	8498.26
2003	8572.46
2004	8964.16
2005	9329.56
2006	9676.36
2007	10080.040000000005
2008	10604.94
2009	11070.64
2010	11502.140000000001
2011	11786.94
2012	12420.54
2013	12670.239999999998
2014	13047.840000000002
2015	13170.139999999998
2016	13346.639999999998
2017	13441.14
2018	13378.239999999998
2019	13315.840000000002
2020	12329.039999999999