Year 2017 PPP (%) 2004 2.1 2005 1.4 2006 1.1 2007 1.1 2008 1.2 2009 1.3 2010 1.2 2011 1.1 2012 1.4 2013 1.5 2014 1.9 2015 1.4 2016 2.2 2017 1.1 2018 1.3 2019 0.6 2020 0.6 2021 0.9