Year	thousand metric tons of CO2 equivalent
1990	21080.2125
1991	19868.27
1992	20272.8725
1993	20055.8275
1994	19638.04
1995	19256
1996	18866.1325
1997	18613.9825
1998	17670.1225
1999	17304.2525
2000	17162.91
2001	16475.125
2002	15788.82
2003	15184.2675
2004	14754.4375
2005	15059.0325
2006	15584.03
2007	15844.1125
2008	15843.1675
2009	15421.6975
2010	15074.5725
2011	16050.9275
2012	17644.515
2013	19337.95
2014	20101.745
2015	20355.9275
2016	20197.025
2017	20358.9275
2018	23607.6275
2019	24546.5425
2020	25384.7825