Year	thousand metric tons of CO2 equivalent
1970	-39.2794262694988
1971	264.4148706054948
1972	726.973251953099
1973	1028.2749267577983
1974	1255.2441943358972
1975	1506.2809082031035
1976	1902.3197998047035
1977	2216.0762695311987
1978	2434.3539062499985
1979	2711.2412109375
1980	3156.570874023404
1981	3101.106005859403
1982	3396.116137695304
1983	3712.5129394530923
1984	3977.852734375003
1985	4138.7180175780995
1986	4405.1551025391
1987	3464.5542236327983
1988	4962.785815429701
1989	5163.515771484397
1990	-503.7698974609011
1991	-832.0053710938009
1992	-1212.309082031301
1993	-1743.005371093801
1994	-1768.067138671904
1995	-2352.923583984404
1996	-2398.550537109404
1997	-2552.281982421904
1998	-2612.421630859404
1999	-2927.814697265596
2000	-3291.3896484375
2001	-3171.997314453103
2002	-3127.038330078103
2003	-2974.669677734397
2004	-2168.0390625
2005	-1461.0759277343968
2006	-1321.159667968801
2007	-1302.6706542968968
2008	-1190.2253417968968
2009	-1258.720703125
2010	-1316.7814941406032
2011	-1253.762207031301
2012	0.2631835936990683
2013	5.7666015625
2014	-88.08349609380093
2015	497.3017578125
2016	-646.2021484375