Year	thousand metric tons of CO2 equivalent
1970	8729.27220214841
1971	6065.452241210902
1972	7383.272138671895
1973	11125.981757812502
1974	6627.843105468703
1975	6397.504716796904
1976	6488.272812499996
1977	9279.194003906206
1978	11066.473906250016
1979	9651.282861328102
1980	11564.819824218679
1981	10136.565986328103
1982	10202.333320312513
1983	17221.633164062507
1984	10968.324687500008
1985	8573.570703125004
1986	9984.085546874998
1987	6676.729785156185
1988	10889.293105468689
1989	8499.389921875001
1990	-3660.4907226562937
1991	-4285.361816406003
1992	-3922.9208984379948
1993	-3967.7094726560026
1994	-4670.431152344012
1995	-4796.740234375
1996	-5109.919921875
1997	-4655.881835937995
1998	-3350.1484375
1999	-3134.1220703129948
2000	-2152.1611328129948
2001	-1775.25
2002	-1575.328125
2003	-1881.1982421879948
2004	-2088.3515625
2005	-2016.3203125
2006	-2014.849609375
2007	-190.1875
2008	2899.732421875
2009	4142.22265625
2010	5664.01953125
2011	1760.8046875
2012	13912.814453125
2013	17666.203125
2014	22540.697265625
2015	26493.544921875
2016	28219.841796875