Year	thousand metric tons of CO2 equivalent
1990	27728.485
1991	25958.6775
1992	25513
1993	24571.99
1994	24386.19
1995	23695.8575
1996	23846.4625
1997	23634.8475
1998	23474.04
1999	23542.6675
2000	23656.1625
2001	21058.455
2002	22349.26
2003	21682.875
2004	21834.3425
2005	21216.6025
2006	21203.0525
2007	21172.54
2008	21479.965
2009	21524.45
2010	21640.02
2011	20941.21
2012	21110.8025
2013	20581.7375
2014	20385.165
2015	20488.6275
2016	20821.2225
2017	20828.0575
2018	21425.3575
2019	21424.1875
2020	21573.8725