Year	thousand metric tons of CO2 equivalent
1990	488.7
1991	408.6
1992	546.5
1993	608.5
1994	634
1995	629.6
1996	612.6
1997	650.5
1998	590.4
1999	534
2000	606.4
2001	671.5
2002	648.8
2003	530.4
2004	583.9
2005	607
2006	600
2007	560.1
2008	580.6
2009	603.6
2010	682.4
2011	727.1
2012	803.1
2013	798.5
2014	674.3
2015	644.5
2016	667.1
2017	745
2018	833.8
2019	882
2020	734.7