Year $ 2011 PPP (%) 1997 0.0559401 1998 0.0377649 1999 0.1055283 2000 0.0389376 2001 0.0169066 2002 0.0030143 2003 0.0131398 2004 0.0440806 2010 0.0011198 2011 0.0154825 2012 0.0050497 2013 0.0061229 2014 0.0007596