Year 2011 PPP (%) 2003 0.2 2004 0.1 2005 0.1 2006 0.3 2007 0.1 2008 0.3 2009 0.6 2010 0.7 2011 0.7 2012 0.5 2013 0.8 2014 0.5 2015 0.4