Year	thousand metric tons of CO2 equivalent
1970	17602.075480468677
1971	10638.4924082812
1972	14205.925168125013
1973	10569.76083906251
1974	11693.034394531205
1975	14271.123984374986
1976	17906.51683593751
1977	12852.304687499978
1978	15510.300195312506
1979	17601.011972656008
1980	19326.467949218975
1981	16800.25650390603
1982	17864.03224609371
1983	18212.11740234401
1984	14073.785625000004
1985	14934.180839843699
1986	16058.063281249997
1987	16165.090351562001
1988	16691.83923828099
1989	17256.471933593974
1990	-4569.856445312995
1991	-3650.960449218983
1992	-4835.215332031017
1993	-2950.816894531017
1994	-7872.69921875
1995	-7740.102050781017
1996	-6592.627441405988
1997	-9600.470703125
1998	-7081
1999	-8791.440429687995
2000	-8326.802734375
2001	-5126.26171875
2002	-4499.005859375
2003	-3526.4775390629948
2004	-6496.553710937995
2005	-6426.731445312995
2006	-5605.788085937995
2007	-2377.05078125
2008	-8523.21875
2009	-9063.9609375
2010	-4037.2607421879948
2011	1716.7998046870052
2012	5004.810546875
2013	15125.322265625
2014	390.8671875
2015	4650.76953125
2016	3701.7275390620052