Year	thousand metric tons of CO2 equivalent
1990	363.7686
1991	359.0006
1992	347.4382
1993	353.3684
1994	349.1368
1995	338.2598
1996	349.5838
1997	351.8486
1998	357.5106
1999	362.6362
2000	354.5902
2001	328.7834
2002	338.7664
2003	333.2236
2004	328.2172
2005	329.1112
2006	347.766
2007	357.9278
2008	368.775
2009	322.3466
2010	323.1512
2011	329.2304
2012	332.27
2013	322.7638
2014	342.6702
2015	348.5408
2016	344.2794
2017	355.5438
2018	345.233
2019	335.4884
2020	337.6936