Year 2011 PPP (%) 1992 3.4 1993 2 1995 5.9 1996 6.4 2002 2.6 2003 1.3 2004 1.1 2005 0.5 2006 0.3 2007 0.2 2008 0.1 2009 0.1 2010 0 2011 0 2012 0.1 2013 0 2014 0 2015 0.1 2016 0.1