Year	thousand metric tons of CO2 equivalent
1970	1752.5067382812022
1971	1217.6598867187004
1972	-258.4950371093978
1973	-1946.5718066406016
1974	-550.2199072266017
1975	347.480605468701
1976	-834.8969628906043
1977	-1207.0083984374996
1978	-999.1979492188048
1979	433.1587402343898
1980	640.0044921875069
1981	2383.5028320312003
1982	3489.0815429686986
1983	4000.519921874995
1984	3228.1865234374973
1985	1840.3087890625006
1986	2847.6601562500045
1987	3510.170703124996
1988	3893.229003906206
1989	3964.568359375001
1990	1764.7314453125
1991	-3249.4497070312937
1992	-11079.461425781294
1993	-4170.8017578125
1994	-3448.3100585937937
1995	-4232.9599609375
1996	-4794.0087890625
1997	-2114.0805664062937
1998	-679.8203125
1999	-868.1513671875
2000	-2266.8193359375
2001	-4735.2099609375
2002	-2802.8408203125
2003	-5660.7802734375
2004	-3698.890625
2005	-5192.0712890625
2006	-4964.059570312995
2007	-573.220703125
2008	-1151.37109375
2009	4114.53125
2010	2490.390625
2011	2416.560546875
2012	1332.548828125
2013	1138.951171875
2014	-947.060546875
2015	-5048.783203125
2016	-7720.55859375