Year	thousand metric tons of CO2 equivalent
1990	2848.7
1991	2988.5
1992	3132.8
1993	3137.4
1994	3137.2
1995	3246.9
1996	3367
1997	3544.9
1998	3533.6
1999	3675
2000	3809.4
2001	3994.7
2002	4124.5
2003	4245.4
2004	4347.6
2005	4453
2006	4485.2
2007	4568.4
2008	4785.8
2009	4882.1
2010	5182.2
2011	5409.2
2012	5714.9
2013	5972
2014	6064.8
2015	6048.5
2016	6239.9
2017	6325.1
2018	6487
2019	6669.3
2020	6583.3