Year 2017 PPP (% of population) 1995 1.7 2000 0.5 2003 0.5 2004 0.6 2005 0.3 2006 0.6 2007 0.5 2008 0.3 2009 0.6 2010 1 2011 1.1 2012 1.5 2013 1 2014 1.5 2015 1.4 2016 1 2017 0.9 2018 0.1 2019 0.7 2020 0.8 2021 0.6