Year 2017 PPP (%) 1986 22.9 1990 23.4 1994 18.4 1998 17.5 2005 7.4 2006 7.7 2009 7.3 2011 5.5 2012 4.9 2013 5.2 2014 6.5 2015 6.2 2016 6.3 2017 5.8 2018 6.7 2019 8.4 2020 8.6 2021 7.1 2022 5.9