Year	thousand metric tons of CO2 equivalent
1970	-2149.1764648437875
1971	-2138.5344726562907
1972	-2172.2061523437933
1973	-2489.0431640624956
1974	-3151.5643554687995
1975	-3044.9093749999993
1976	-3239.0930664063
1977	-3084.5684570312915
1978	47.87578124999891
1979	583.3577148437125
1980	534.9701953124968
1981	441.52765625000757
1982	-115.95921874999658
1983	-292.4764062499944
1984	-615.7463378906032
1985	-407.0979003905959
1986	-486.2508105469078
1987	-1120.7913671874958
1988	14.241816406205544
1989	8.523437499994543
1990	-8363.2939453125
1991	-4139.804443359397
1992	-4730.720458984397
1993	-5060.341308593801
1994	-5181.469482421897
1995	-4950.474853515603
1996	-5460.962890625
1997	-3080.526611328103
1998	-2398.109863281301
1999	-3134.889892578103
2000	-3661.003173828103
2001	-2922.278564453103
2002	-2811.692871093801
2003	-4495.513427734397
2004	-3450.277587890603
2005	-3796.478027343801
2006	-3891.8017578125
2007	-4038.571044921897
2008	-3394.663574218801
2009	-2348.002563476599
2010	-3038.418457031301
2011	-3183.8017578125
2012	-7040.598144531301
2013	-6756.753295898401
2014	-7532.198852539099
2015	-8189.005981445298
2016	-7702.909423828103