Year	thousand metric tons of CO2 equivalent
1970	-445.67179089354977
1971	-426.8353889160244
1972	-381.56605932617094
1973	-366.00605834961243
1974	-355.20633392334275
1975	-332.0573001098637
1976	-283.56528027343666
1977	-223.85082373047044
1978	-229.94529687500108
1979	-255.18825805664528
1980	-316.32626000977325
1981	-306.27964050292576
1982	-317.62466571044934
1983	-344.2795718994057
1984	-263.9471330566412
1985	-248.51781066896
1986	-291.603432617183
1987	-495.06131103516236
1988	-289.77838989257725
1989	-276.155814208978
1990	-77.05929565429688
1991	-70.53770446777344
1992	-78.3792839050293
1993	-105.47593688964844
1994	-99.2196159362793
1995	-94.24408721923828
1996	-107.92515563964844
1997	-49.75428009033203
1998	-53.21094512939453
1999	-24.964801788330078
2000	-10.024087905883789
2001	-20.796579360961914
2002	1.6789665222167969
2003	72.15317344665527
2004	2.798107147216797
2005	-61.76404285430908
2006	-52.98334217071533
2007	137.9825897216797
2008	511.50714111328125
2009	597.1985778808594
2010	496.7020950317383
2011	1059.8561820983887
2012	1089.7278861999512
2013	1325.4897232055664
2014	2768.2557678222947
2015	3345.252826690703
2016	5071.144683837891