Year Purchasing power parity; 2011 international dollar (Units) 1980 18247.38 1981 17477.04 1982 17421.58 1983 15273.41 1984 15632.39 1985 15340.11 1986 16077.82 1987 16437.15 1988 17079.57 1989 14351.53 1990 14786.12 1991 15842.94 1992 16416.70 1993 16091.90 1994 15368.41 1995 15632.06 1996 15272.60 1997 15917.57 1998 15651.35 1999 14428.33 2000 14468.73 2001 14713.30 2002 13192.67 2003 11974.82 2004 13941.06 2005 15139.89 2006 16378.58 2007 17541.55 2008 18189.96 2009 17346.05 2010 16837.10 2011 17285.97 2012 17996.47 2013 17980.52 2014 17039.99 2015 15763.97 2016 13037.88 2017 11075.01 2018 9487.13 2019 7399.43 2020 6889.02 2021 6544.57 2022 6413.67 2023 6317.47 2024 6222.71