Year 2017 PPP (%) 1986 2.3 1989 4.9 1992 2.1 1996 2.4 1997 2.6 2000 2.4 2001 1.6 2002 2.6 2003 2.9 2004 3.6 2005 2.3 2006 1.7 2007 1.7 2008 1.5 2009 1.2 2010 0.9 2011 1 2012 1 2013 0.8 2014 0.8 2015 0.6 2016 0.6 2017 0.3 2018 0.2 2019 0.2 2020 0.4 2021 0.2 2022 0.2