Year 2017 PPP (%) 1995 1.1 2000 0.4 2003 0.4 2004 0.5 2005 0.2 2006 0.3 2007 0.4 2008 0.3 2009 0.5 2010 0.7 2011 0.9 2012 0.6 2013 0.3 2014 0.8 2015 0.8 2016 0.6 2017 0.4 2018 0.1 2019 0.4 2020 0.5 2021 0.4