Year	thousand metric tons of CO2 equivalent
1990	27735.57895
1991	28104.76752
1992	29734.29229
1993	30557.71166
1994	33471.82083
1995	35812.7906
1996	35998.24749
1997	37135.94659
1998	37635.74608
1999	38986.38077
2000	39906.38447
2001	40342.60971
2002	41520.75215
2003	42693.94179
2004	44084.96323
2005	46379.61127
2006	47940.89322
2007	48042.83536
2008	50103.57511
2009	54366.51825
2010	53510.64299
2011	54513.04709
2012	53137.98419
2013	56506.77509
2014	57065.8172
2015	58249.8177
2016	61034.29295
2017	64624.5824
2018	65573.02005
2019	67252.1007
2020	68971.75355