Year kg per 2010 US$ of GDP 1995 2.33440758274421 1996 2.55330592595705 1997 1.54777270847611 1998 1.46279124179884 1999 1.087088203681 2000 0.830564497785172 2001 0.827755194147425 2002 0.823954544370253 2003 0.831959847629701 2004 0.822306683452658 2005 0.822214299094242 2006 0.800423047123088 2007 0.728041148907962 2008 0.689653439366536 2009 0.698763835186663 2010 0.707117281788291 2011 0.682646185674834 2012 0.6712027274349 2013 0.62470116694929 2014 0.587098533123442