Year	thousand metric tons of CO2 equivalent
1990	10074.1
1991	8004.728096
1992	5932.791029
1993	6573.286359
1994	7306.092069
1995	6546.032627
1996	7574.812028
1997	7450.631254
1998	7050.707037
1999	7035.984904
2000	7375.297208
2001	7896.354295
2002	6801.460278
2003	6714.174262
2004	7662.765724
2005	7364.914436
2006	7148.64641
2007	6618.886177
2008	6102.677285
2009	5580.793245
2010	5428.087236
2011	5715.808354
2012	5586.959255
2013	5983.093592
2014	5814.717617
2015	5803.109274
2016	6319.668655
2017	6324.850031
2018	6371.088007
2019	6334.514183
2020	6484.468559