Year	thousand metric tons of CO2 equivalent
1970	21062.6467626953
1971	21059.8867283203
1972	21274.472094238306
1973	21535.7365105469
1974	21975.103080078108
1975	21471.7981238281
1976	21264.397625585898
1977	20896.089253710896
1978	20714.276914648402
1979	20258.50794707029
1980	20040.0440244141
1981	19985.715816406195
1982	20326.167007812503
1983	20212.5893359375
1984	20379.19898828119
1985	20305.0097685547
1986	20149.0948603516
1987	20058.522373046904
1988	19661.416058593702
1989	19642.475790039105
1990	-1960.5950927734011
1991	-1742.4580078125
1992	-259.4658203125
1993	68.02404785159888
1994	-694.5386962890989
1995	-648.119567871101
1996	-523.9625854492006
1997	-548.9694213867006
1998	-475.492614746101
1999	-264.16625976559953
2000	-374.9629516601999
2001	-451.9779663085992
2002	-216.0596313476999
2003	-201.892578125
2004	-495.8037719726999
2005	-513.9466552734011
2006	-115.2041015625
2007	-606.7769775390989
2008	-640.6427612305015
2009	-372.8156127929997
2010	499.52178955079944
2011	-2013.0095214844005
2012	-3235.992675781301
2013	-3744.3770751953016
2014	-3347.1706542969005
2015	-6578.8301391602
2016	-6522.413513183601