Year kt of CO2 equivalent 1990 34993.46117 1991 41289.1871 1992 46893.98553 1993 49885.46396 1994 51336.22738 1995 53219.75331 1996 51962.05591 1997 51504.52351 1998 51904.17861 1999 52145.91871 2000 51379.7988 2001 51123.28413 2002 53053.44695 2003 51904.12978 2004 42335.29261 2005 40768.44043 2006 39275.67552 2007 38481.32811 2008 37632.77071 2009 37921.9008 2010 37604.51839 2011 35465.97845 2012 23692.14351 2013 16098.14107 2014 14302.63613 2015 13970.4187 2016 13750.35999 2017 14906.04378 2018 13682.83508 2019 15039.56887 2020 15963.67267