Year thousand metric tons of CO2 equivalent 1970 792.1672660522509 1971 800.4175529174811 1972 807.8329230956997 1973 816.4046572265618 1974 825.2893718872112 1975 821.9557573852508 1976 824.48894281006 1977 863.9535505371086 1978 878.4658947906485 1979 880.7903994140593 1980 906.4625246581982 1981 894.3223159179674 1982 833.5992836914115 1983 834.5523220214795 1984 1030.32134777832 1985 937.08690594482 1986 946.5733951072677 1987 420.49052807617 1988 963.4730671386687 1989 967.646756103519 1990 -289.5339188575708 1991 -312.73126220703125 1992 -145.09930419921875 1993 -160.41027832030886 1994 -261.32373046875 1995 -247.62904357910156 1996 -256.96417236328125 1997 -220.41357421875 1998 -205.10668945313046 1999 -214.1680297851599 2000 -203.9194946289008 2001 -178.4449462891007 2002 -149.16522216799967 2003 -106.31768798829944 2004 -72.22052001950033 2005 -185.60321044920056 2006 -229.5498046875 2007 -268.9193115233993 2008 -299.83581542970023 2009 -497.74230957029977 2010 -911.2121582030995 2011 645.7672119141007 2012 1903.9979248047002 2013 1650.6722412108993 2014 2332.5181884766007 2015 4109.6281738280995 2016 4415.309204101599