Year 2017 PPP (%) 2000 10.1 2001 8.2 2002 7.7 2003 5.3 2004 2.4 2005 2.6 2006 1.5 2007 1.7 2008 0.6 2009 0.3 2010 1 2011 0.2 2012 0.7 2013 0.4 2014 0.2 2015 0.4 2016 0.2 2017 0.2 2018 0.1 2019 0.2 2020 0.2 2021 0.2