Year	thousand metric tons of CO2 equivalent
1970	591.6576354980516
1971	694.2690466308595
1972	875.0886804199217
1973	1130.3639550781236
1974	1181.8844799804683
1975	1420.0822888183575
1976	1597.016401367191
1977	1656.2251403808614
1978	1888.0647229003916
1979	2001.0461511230515
1980	2162.81368774414
1981	2251.7517590331972
1982	2159.15924804687
1983	2166.168045043948
1984	2289.4409082031225
1985	2395.186577148438
1986	2497.7395776367193
1987	2401.6183215331966
1988	2684.7019287109397
1989	2851.063710937502
1990	-242.47235107421875
1991	-235.6455078125
1992	-211.6041717529297
1993	-207.41247558594114
1994	-183.4242553710901
1995	-167.82403564453125
1996	-140.4579467773401
1997	-84.56762695312864
1998	-49.43774414062864
1999	93.7208251953125
2000	17.398193359367724
2001	-15.20086669921875
2002	25.805541992191138
2003	6.77801513671875
2004	-92.20874023438228
2005	-117.26904296875
2006	-96.08709716796875
2007	37.45501708984375
2008	115.86608886720205
2009	164.25524902340112
2010	155.375
2011	347.89892578119907
2012	10.82287597659888
2013	501.9967041015989
2014	747.5720214844041
2015	2703.312744140596
2016	3975.081176757798