Year thousand metric tons of CO2 equivalent 1970 4444.927688568115 1971 2524.89876016235 1972 2666.65907192993 1973 2361.5075215148895 1974 1971.7485993957507 1975 2204.2716070556594 1976 1765.3541041564895 1977 2221.5361953735396 1978 2337.695243225101 1979 3266.1039923095705 1980 2634.40932983398 1981 2204.2051567077606 1982 2642.0141839599605 1983 2805.2590612792997 1984 1788.2700476074206 1985 1641.6609960937503 1986 1873.1140844726592 1987 3109.6040802002008 1988 1955.7309350585904 1989 1874.6610357665993 1990 -1397.19580078125 1991 -99.80107116699037 1992 122.21711730957031 1993 112.15296936034974 1994 -100.42112731933958 1995 -497.97900390625 1996 -965.0540771484402 1997 -569.2710418701199 1998 -1228.4519348144504 1999 -956.9541931152298 2000 -1023.3928833007803 2001 -1312.2101440429697 2002 -1316.2119140625 2003 -2011.5140686035202 2004 -1310.4461059570303 2005 -934.7691345214798 2006 -881.0800323486301 2007 -361.84301757812955 2008 -520.47604370117 2009 -423.2608947753897 2010 123.30407714844023 2011 1488.26513671875 2012 1601.5499572753897 2013 1384.9853515625 2014 998.3985900878897 2015 808.8881225585901 2016 1095.7918701171902