Year	thousand metric tons of CO2 equivalent
1970	41247.54987001706
1971	40276.445683626196
1972	39808.62177134421
1973	42791.620607761404
1974	34316.95341219311
1975	36330.81267400265
1976	37074.48886990137
1977	42938.28490871429
1978	36916.445892309464
1979	39930.75415904999
1980	48794.55891078947
1981	41193.67328848554
1982	47211.92462024498
1983	44118.54895458984
1984	43847.504417865755
1985	40074.33671710901
1986	40439.58170063142
1987	42014.700391982056
1988	39173.018238250734
1989	42313.865694129
1990	-83.9759316444397
1991	-124.33381938934326
1992	-119.73079776763916
1993	-127.59032559394836
1994	-177.33101344108582
1995	-185.62536525726318
1996	-173.97091031074524
1997	-232.33138942718506
1998	-138.8040006160736
1999	-122.5175347328186
2000	-104.47957348823547
2001	-110.51286125183105
2002	-102.80122685432434
2003	-134.0302758216858
2004	-126.06844520568848
2005	-131.58871507644653
2006	-119.47975397109985
2007	-136.64548540115356
2008	-167.6374990940094
2009	-144.26692938804626
2010	-180.60005450248718
2011	-170.42087268829346
2012	-184.79916763305664
2013	-175.59471201896667
2014	-205.47962999343872
2015	-199.6019184589386
2016	-203.22873389720917