Year kg per 2010 US$ of GDP 1995 0.213316710585022 1996 0.229767230159709 1997 0.241480727051647 1998 0.204675959168587 1999 0.270349686332661 2000 0.278448037472528 2001 0.296950078323952 2002 0.355923092503615 2003 0.266543835316569 2004 0.331525399096866 2005 0.343886172085841 2006 0.344180722044652 2007 0.32879422476496 2008 0.324277242187774 2009 0.366262703988497 2010 0.361291110126163 2011 0.351052931309703 2012 0.385714030708226 2013 0.353603015555196 2014 0.402421840472181