Year	thousand metric tons of CO2 equivalent
1990	28.5484
1991	28.6378
1992	30.098
1993	31.3794
1994	31.5582
1995	32.6012
1996	32.78
1997	38.4718
1998	42.4054
1999	50.3024
2000	56.5902
2001	61.09
2002	57.6928
2003	62.9972
2004	67.8248
2005	63.5336
2006	68.3612
2007	73.9934
2008	72.6226
2009	72.2948
2010	78.1058
2011	73.1888
2012	82.8142
2013	87.91
2014	81.8308
2015	82.4268
2016	84.4234
2017	80.8474
2018	85.377
2019	80.2812
2020	89.4894