Year Purchasing power parity; 2011 international dollar (Units) 1980 946.037 1981 1037.16 1982 975.523 1983 894.726 1984 960.362 1985 969.697 1986 1004.85 1987 984.136 1988 981.534 1989 1013.75 1990 971.405 1991 956.238 1992 918.367 1993 897.137 1994 966.878 1995 984.945 1996 888.036 1997 935.578 1998 950.236 1999 965.89 2000 931.803 2001 918.894 2002 905.901 2003 830.245 2004 838.099 2005 844.189 2006 868.848 2007 892.328 2008 893.639 2009 891.627 2010 901.118 2011 912.956 2012 932.22 2013 578.744 2014 573.515 2015 589.482 2016 604.34 2017 618.372 2018 632.803 2019 651.938 2020 671.062 2021 690.859 2022 711.6 2023 733.088 2024 755.26