Year 2011 PPP (%) 1996 5.1 1997 14.1 1998 13.2 1999 16.1 2000 17.2 2001 17.5 2002 10 2003 10.1 2004 9.5 2005 10.2 2006 10.1 2007 10.9 2008 9.7 2009 9.6 2010 10.9 2011 10.2 2012 8.3 2013 6.4 2014 5.2 2015 4.4 2016 4.4 2017 4.9