Year $ 2011 PPP (USD) 2002 0.0011532 2003 0.0004755 2004 0.0003493 2005 0.0001009 2006 1.41E-05 2007 0 2008 0 2009 2.79E-05 2010 0 2011 2.66E-06 2012 0 2013 0