Year	thousand metric tons of CO2 equivalent
1990	23855.41
1991	23760.2475
1992	24481.5275
1993	24312.645
1994	24409.7175
1995	25675.6575
1996	26605.9075
1997	26513.4625
1998	27446.775
1999	26526.985
2000	26243.8
2001	26922.4525
2002	27744.41
2003	27289.0575
2004	28823.285
2005	29116.9025
2006	28828.375
2007	27650.16
2008	26667.5525
2009	25399.045
2010	25289.55
2011	24462.8675
2012	24606.7875
2013	25189.66
2014	24811.36
2015	24112.1475
2016	23828.9425
2017	24209.54
2018	24136.825
2019	23961.0125
2020	23479.3575