Year	thousand metric tons of CO2 equivalent
1990	18268.57
1991	16404.4
1992	14481.7525
1993	12456.235
1994	12661.925
1995	11671.945
1996	11613.9975
1997	11346.45
1998	10854.96
1999	10581.755
2000	10225.39
2001	9751.115
2002	9486.6075
2003	9744.9175
2004	9851.3525
2005	9846.705
2006	10042.5675
2007	10202.2625
2008	10097.4925
2009	9817.875
2010	9423.79
2011	8153.7825
2012	8113.9575
2013	8146.21
2014	8231.5425
2015	8344.31
2016	8402.895
2017	8302.975
2018	8100.47
2019	8036.2275
2020	8011.0425