Year	thousand metric tons of CO2 equivalent
1970	37975.927789091336
1971	38254.91322399925
1972	39078.34415629327
1973	39595.37244025751
1974	40191.03782801386
1975	39417.96337361963
1976	40131.82177310486
1977	42167.6246139619
1978	50364.47184506336
1979	51975.66727513206
1980	52189.768975009305
1981	52578.666818180776
1982	51852.619137597605
1983	53716.06419600908
1984	61810.62277050614
1985	53539.502340347404
1986	57495.22320198544
1987	15285.195386931973
1988	57411.838909439844
1989	59183.01122829316
1990	-95699.00774130227
1991	-95857.34622326499
1992	-110468.22686775026
1993	-116006.59508912264
1994	-128358.79562678933
1995	-133794.1396058202
1996	-147375.21111491328
1997	-143445.16975952685
1998	-140017.39405223727
1999	-147289.93316453695
2000	-131533.0088526612
2001	-136782.41646023153
2002	-134985.27123457193
2003	-141401.1564759916
2004	-129299.44738030431
2005	-131535.30402337067
2006	-148978.15602850914
2007	-113513.62685169281
2008	-122665.87980018563
2009	-179635.59337648805
2010	-182442.34995326397
2011	-190892.25744009015
2012	-165939.711286366
2013	-180521.44690100852
2014	-171583.1751399338
2015	-242665.38486716154
2016	-317111.7506196051