Year thousand metric tons of CO2 equivalent 1970 12.767670051980026 1971 12.824334096765533 1972 10.570594930529616 1973 13.877473562693595 1974 14.21858871121411 1975 12.367263971066478 1976 10.538688981199279 1977 10.450090432238625 1978 9.320332861399706 1979 11.12323831143381 1980 13.707445013761479 1981 9.148313404750787 1982 13.809739036464705 1983 13.54483870811459 1984 12.317059448814383 1985 8.7950719824791 1986 7.118465412712098 1987 0.5542807396889131 1988 18.481669822359066 1989 19.570874781990128 1990 14.974648118019104 1991 12.77186954021451 1992 23.93349924683571 1993 24.634073108434706 1994 21.595586121082306 1995 26.450332999229403 1996 15.09213700890541 1997 8.201251327991486 1998 32.80966687202448 1999 41.41085088253021 2000 39.10567843914032 2001 32.59669154882431 2002 42.49989834427828 2003 61.680931687354985 2004 79.5321974158287 2005 70.02897191047668 2006 76.13411128520971 2007 36.13467001914978 2008 31.533174991607666 2009 42.93801057338709 2010 65.7945026755333 2011 61.75881785154343 2012 59.274481236935 2013 79.10869830846798 2014 75.133532643318 2015 84.303871721029 2016 101.57755050063099