Year 2011 PPP (%) 1981 5.4 1984 6.5 1987 5.4 1990 6.1 1993 5.9 1996 5.9 1999 5.8 2002 4.7 2005 4 2008 2.8 2010 2.5 2011 2.4 2012 1.8 2013 1.8 2015 1.3