Year 2017 PPP (%) 1979 2 1986 2.4 1992 0.9 1997 1.5 2001 1 2002 2.3 2003 2.5 2004 3 2005 2.6 2006 2.3 2007 2 2008 2.1 2009 2.5 2010 1.9 2011 2 2012 2 2013 1.5 2014 1.6 2015 1.4 2016 1.2 2017 1.4 2018 1 2019 1.5 2020 1.2 2021 1.1