Year 2017 PPP (% of population) 2003 0.4 2004 0.4 2005 0.2 2006 0.4 2007 0.3 2008 0.2 2009 0.3 2010 0.5 2011 0.8 2012 0.3 2013 0.2 2014 0.1 2015 0.1 2016 0.2 2017 0