Year	thousand metric tons of CO2 equivalent
1990	3443.3602
1991	2197.899
1992	2740.6762
1993	3685.9024
1994	3570.5764
1995	3293.3768
1996	3208.566
1997	3379.8266
1998	3530.406
1999	3419.9374
2000	3411.7126
2001	4997.3706
2002	5192.9182
2003	2179.9594
2004	2448.9342
2005	2973.2354
2006	2904.3676
2007	2800.6636
2008	3139.1618
2009	3772.3224
2010	3598.8268
2011	3858.6828
2012	4021.0928
2013	4027.2912
2014	3624.127
2015	2709.118
2016	3031.7328
2017	3523.1944
2018	3435.2248
2019	4206.8362
2020	4223.6136