Year	thousand metric tons of CO2 equivalent
1990	4291.709753
1991	3880.406272
1992	3041.579286
1993	2956.857149
1994	2984.235988
1995	3494.924594
1996	3569.419168
1997	3840.478293
1998	3552.986119
1999	3315.942257
2000	2935.798714
2001	3354.755281
2002	3223.118513
2003	2917.23971
2004	3936.605884
2005	3607.485235
2006	3382.9258
2007	3746.8434
2008	3288.132
2009	3926.3288
2010	3157.3696
2011	3287.6254
2012	3834.7534
2013	3851.6202
2014	3145.986
2015	2919.6252
2016	3257.1996
2017	2943.7334
2018	2477.8402
2019	3077.3566
2020	3335.6928