Year	thousand metric tons of CO2 equivalent
1970	29229.01439188792
1971	23980.954737636483
1972	26699.885697691476
1973	29772.15026503394
1974	28433.587562891935
1975	30307.887705412588
1976	30140.137750560323
1977	35485.58967812661
1978	36474.314582142346
1979	38559.34997427981
1980	42169.21309692429
1981	42131.69780866766
1982	44126.23400282413
1983	52531.33126639845
1984	45600.441733291926
1985	45380.78647486969
1986	47499.858709227934
1987	51304.00136896205
1988	49713.16098000537
1989	47463.86228931069
1990	-7801.903856217903
1991	-6571.767017483757
1992	-4063.755618542409
1993	-1393.2763066738357
1994	-2507.466661162709
1995	-2466.1071130633377
1996	-2780.0354802310885
1997	-6035.921859338916
1998	-6689.973486125489
1999	-5820.132023476048
2000	-6242.278770700104
2001	-6614.206754386447
2002	-4047.786445692276
2003	-4707.869518816544
2004	-113.54660122101518
2005	9425.00098077959
2006	11912.685277134184
2007	7319.387401580802
2008	9542.464921891617
2009	7833.685445442803
2010	5725.643340766463
2011	5231.980624541553
2012	8298.471621423918
2013	6819.889393843707
2014	7420.849081858905
2015	-2234.905090063856
2016	-2782.8194410280307