Year thousand metric tons of CO2 equivalent 1970 1152102.1535779925 1971 820482.5457360444 1972 1264813.5284467258 1973 1194167.7560334613 1974 761052.752008461 1975 766707.8937967891 1976 859222.0829111184 1977 1329245.6127425823 1978 1103886.6445910425 1979 1197697.0646925862 1980 1332688.6243035905 1981 1145136.132946436 1982 2639825.0009391457 1983 2095641.6161631034 1984 1244005.1102230714 1985 1144380.3997956153 1986 1510767.056287424 1987 2198387.9305687705 1988 1276979.248501244 1989 1140644.0237157964 1990 -248022.13530154532 1991 -217880.6235158934 1992 -217965.1912414811 1993 -205903.20427614113 1994 -214367.12689920882 1995 -223374.51696568736 1996 -242297.3615705934 1997 -244499.68448644542 1998 -233902.9361267578 1999 -242419.29461979846 2000 -237758.40378268852 2001 -239527.82197534392 2002 -227549.5253896865 2003 -232737.78992811707 2004 -209224.11991300498 2005 -216913.2818085855 2006 -210471.38229903684 2007 -166351.86797467677 2008 -160995.7138009823 2009 -210510.6623276038 2010 -197741.4990608774 2011 -156579.40558131845 2012 -131924.13312690696 2013 -142701.063725166 2014 -119899.16718130201 2015 -171914.67114391545 2016 -267016.943179231