Year	thousand metric tons of CO2 equivalent
1990	4706
1991	3987
1992	3230.1
1993	2729.3
1994	2314.7
1995	2131.1
1996	2115.7
1997	2168.2
1998	1946.1
1999	2146.2
2000	2614.2
2001	2703.1
2002	2520.8
2003	2558.1
2004	2731.9
2005	2935.9
2006	3059.2
2007	3203
2008	3255.1
2009	3252.8
2010	3612.6
2011	3785.6
2012	3951.1
2013	4097.6
2014	3925.5
2015	3878.5
2016	3773.8
2017	3862.2
2018	4006.9
2019	3932
2020	3867.1