Year thousand metric tons of CO2 equivalent 1970 -42.940947265627074 1971 -18.900954589839785 1972 -2.939532470701124 1973 31.46318115233771 1974 52.417878417968495 1975 73.69153198241656 1976 98.08923461914219 1977 141.68816528320167 1978 201.00498901367064 1979 234.98937011719136 1980 252.1972900390574 1981 266.5312414550772 1982 289.99093994141094 1983 298.3723931884806 1984 320.0828881835887 1985 336.38170471191006 1986 350.6848223877023 1987 13.603970336907878 1988 394.9871417236318 1989 418.12210327148114 1990 24.920928955078125 1991 23.811004638671875 1992 1.949676513671875 1993 -25.70526123046875 1994 34.11174011230105 1995 42.552581787109375 1996 21.219665527340112 1997 80.55902099609011 1998 117.82135009765989 1999 131.9543151855505 2000 191.75192260742188 2001 125.95371627807981 2002 117.54179000854128 2003 139.30721664429075 2004 -2.525787353519263 2005 186.41513061523074 2006 216.3534545898401 2007 239.8076171875 2008 296.3533020019495 2009 91.46405029296875 2010 136.18948364257812 2011 209.60131835937136 2012 1113.5294799804688 2013 1048.9133605956995 2014 1068.0783386230505 2015 974.1860961914099 2016 861.9865417480505