Year	thousand metric tons of CO2 equivalent
1970	-3446.751855468803
1971	-3389.3943359375007
1972	-3430.7323242188068
1973	-4134.9002929687895
1974	-4225.749511718792
1975	-4004.092285156302
1976	-4157.930468750003
1977	-4474.388867187984
1978	-1095.2087890629855
1979	-1106.0912109379997
1980	-634.6982421879884
1981	-999.6998046879944
1982	-923.0890624999902
1983	-4158.760546875
1984	-11250.439843750011
1985	-14419.968750000004
1986	-13759.849218749994
1987	-17491.44062500001
1988	-11095.71953124999
1989	-10006.885156249975
1990	-17806.6328125
1991	-17308.7265625
1992	-13075.97265625
1993	-11953.69140625
1994	-11316.52734375
1995	-11457.1328125
1996	-10547.19921875
1997	-8855.140625
1998	-7074.3125
1999	-5867.890625
2000	-7032.0390625
2001	-4970.76953125
2002	-8268.87109375
2003	-7834.80859375
2004	-5584.328125
2005	-8948.33984375
2006	-9424.51953125
2007	808.0078125
2008	4402.96875
2009	9602.640625
2010	17514.57421875
2011	24205.2109375
2012	31850.00390625
2013	35577.49609375
2014	29371.30859375
2015	48127.54296875
2016	56606.16796875