Year	thousand metric tons of CO2 equivalent
1990	14383.09
1991	14304.3075
1992	13933.5825
1993	14458.2175
1994	14661.265
1995	15409.8875
1996	15626.0175
1997	15765.5975
1998	15921.575
1999	16112.5525
2000	16237.235
2001	16276.1075
2002	16472.705
2003	16707.5175
2004	16963.2475
2005	17162.965
2006	17395.49
2007	17439.8475
2008	18008.035
2009	18424.95
2010	18540.5275
2011	18893.3575
2012	19277.2025
2013	19223.3275
2014	19346.9725
2015	19158.47
2016	19194.97
2017	19732.67
2018	19770.665
2019	20011.46
2020	20032.465