Year 2017 PPP (%) 1982 3 1983 2.9 1984 2.8 1985 2.7 1986 2.7 1987 2.5 1988 2.4 1989 2.3 1990 2.4 1991 2.5 1992 2.8 1993 3.6 1994 4.1 1995 3.3 1996 3.8 1997 2.8 1998 2.9 1999 3.9 2000 3.5 2001 3 2002 2.7 2003 2.5 2004 2.3 2005 2 2006 1.8 2007 1.4 2008 1.2 2009 1.1 2010 1.1 2011 1.1 2012 1.1 2013 1.1 2014 1.2 2015 1.2 2016 1 2017 1 2018 0.9 2019 0.8 2020 0.7 2021 0.6 2022 0.6