Year	thousand metric tons of CO2 equivalent
1990	15298.1161
1991	15339.88228
1992	15387.69965
1993	15339.82603
1994	15298.23041
1995	15282.18339
1996	13780.30535
1997	13546.81271
1998	14958.74467
1999	13843.69484
2000	14254.9178
2001	14598.4332
2002	15799.896
2003	18109.8296
2004	18236.7898
2005	17925.7228
2006	16570.96996
2007	17741.51332
2008	16832.97809
2009	16929.86605
2010	17812.16981
2011	18403.57176
2012	17489.66352
2013	18068.72927
2014	17527.36362
2015	18238.39278
2016	18282.69915
2017	18661.83952
2018	16759.86409
2019	18795.60166
2020	17757.86784