Year	thousand metric tons of CO2 equivalent
1990	730.152156
1991	678.246407
1992	606.987952
1993	592.150437
1994	544.606187
1995	512.431898
1996	502.33941
1997	464.71109
1998	468.413238
1999	408.751414
2000	402.23393
2001	405.589014
2002	377.483818
2003	1034.769585
2004	365.665089
2005	366.278455
2006	354.742825
2007	361.320683
2008	358.350617
2009	339.319097
2010	321.346962
2011	293.220478
2012	288.082918
2013	290.016866
2014	280.337161
2015	276.625661
2016	280.235507
2017	254.929312
2018	263.223117
2019	247.016922
2020	245.910727