Year kg per 2010 US$ of GDP 1992 1.63552409489317 1993 1.38465782740595 1994 0.80120564029513 1995 0.950355975185865 1996 1.3167981739496 1997 0.985971863909718 1998 1.08615572049026 1999 1.05663464001804 2000 0.866107805774529 2001 0.809818185050584 2002 0.599703545705191 2003 0.596475361319514 2004 0.667422341460285 2005 0.5962936318818 2006 0.606378129699398 2007 0.684567005889107 2008 0.569650832444544 2009 0.463152628561326 2010 0.451048821674741 2011 0.387895945497293 2012 0.450396065831949 2013 0.497469207511327 2014 0.695132702962618