Year 2017 PPP (% of population) 1995 2.2 2000 1 2003 0.7 2004 1 2005 0.5 2006 0.9 2007 0.7 2008 0.5 2009 0.7 2010 1.3 2011 2 2012 2.8 2013 2.6 2014 2.9 2015 2.8 2016 2 2017 1.6 2018 0.3 2019 1.3 2020 1.6 2021 1.1