Year thousand metric tons of CO2 equivalent 1970 -90110.50624999998 1971 92014.92625000014 1972 90579.74375000002 1973 92328.67999999988 1974 104390.39999999962 1975 89818.82624999993 1976 112316.15000000037 1977 129745.09374999965 1978 136714.6031250002 1979 143937.09375000035 1980 134115.5999999998 1981 140749.0031250004 1982 130211.29999999999 1983 157170.49999999983 1984 154457.8968749998 1985 159184.09687499964 1986 154790.1968749998 1987 -2819.1968749997905 1988 196775.403125 1989 160964.00312499964 1990 -11271 1991 -15758.5 1992 -12788.203125 1993 -7607.09375 1994 -11868.203125 1995 5925.40625 1996 14821.09375 1997 118950.90625 1998 148570 1999 141874.203125 2000 109549.90625 2001 118677.59375 2002 38003.59375 2003 26838.90625 2004 58947.296875 2005 64437.90625 2006 90576.796875 2007 102610.5 2008 109824.09375 2009 114027.5 2010 85723 2011 2913.90625 2012 -1686.90625 2013 64461.453125 2014 3348.703125 2015 29416.03125 2016 37873.390625