Year Purchasing power parity; 2011 international dollar (Units) 1980 7683.08 1981 8018.31 1982 8283.19 1983 8587.12 1984 9028.25 1985 8669.53 1986 8535.37 1987 8766.76 1988 9404.71 1989 10014.36 1990 10462.68 1991 11288.70 1992 11956.41 1993 12781.62 1994 13584.59 1995 14530.29 1996 15576.32 1997 16297.83 1998 14717.08 1999 15226.65 2000 16134.64 2001 15795.60 2002 16240.73 2003 16778.54 2004 17511.91 2005 17986.27 2006 18739.74 2007 19722.78 2008 20301.26 2009 19650.79 2010 20755.63 2011 21498.39 2012 22330.86 2013 22834.49 2014 23816.05 2015 24645.37 2016 25322.93 2017 26490.39 2018 27431.26 2019 28345.10 2020 29330.73 2021 30362.47 2022 31433.91 2023 32549.44 2024 33715.65