Year kt of CO2 equivalent 1990 23657.07211 1991 22157.84232 1992 20655.75199 1993 19720.05322 1994 18517.49206 1995 17993.18625 1996 17763.67607 1997 17403.14567 1998 16711.42827 1999 15855.72179 2000 14977.33225 2001 14683.48604 2002 14136.36635 2003 14064.79385 2004 13652.28346 2005 14041.60746 2006 14292.78489 2007 13823.55467 2008 13924.58664 2009 13589.51517 2010 13817.51154 2011 13771.10787 2012 13619.36928 2013 12822.31404 2014 12755.61822 2015 12762.36222 2016 12474.72087 2017 12492.4597 2018 12408.73854 2019 12423.22987 2020 12381.5937