Year thousand metric tons of CO2 equivalent 1970 1939571.85219303 1971 1281243.827435688 1972 1328755.035521318 1973 1406425.6638620244 1974 1209967.3746297788 1975 1390901.6932624327 1976 1273420.9054626615 1977 1461433.3785212724 1978 1478914.902516898 1979 1861669.786451077 1980 1683225.3665638105 1981 1472606.9753503194 1982 1662340.6278513093 1983 1653604.5168699368 1984 1384738.7693707892 1985 1368688.8159746486 1986 1295692.0979328882 1987 1643816.3722011787 1988 1268758.589027499 1989 1398139.0094963952 1990 -28411.753862584734 1991 -24729.290800480292 1992 -26694.378785865927 1993 -14062.49353519435 1994 -18291.69906422886 1995 -20441.38609068981 1996 -30774.717979124882 1997 -36376.01918214919 1998 -29801.420826870275 1999 -29339.76403886403 2000 -34075.030589090515 2001 19309.64934397279 2002 28940.832496296753 2003 21985.866735674117 2004 35170.895586107275 2005 32638.260672436965 2006 38222.68867438426 2007 46076.64431370795 2008 53844.96098968685 2009 49897.327123726325 2010 73948.15391870779 2011 85793.2697238817 2012 120203.4665196653 2013 126314.073280774 2014 140038.67286886272 2015 127121.64340066898 2016 134050.18864143634