Year 2011 PPP (%) 2003 0.6 2004 0.6 2005 0.6 2006 0.6 2007 0.3 2008 0.4 2009 0.6 2010 0.5 2011 0.9 2012 0.6 2013 0.7 2014 0.5 2015 0.6