Year Purchasing power parity; 2011 international dollar (Units) 1980 16246.72 1981 16724.57 1982 17080.29 1983 15077.90 1984 14001.52 1985 13250.09 1986 12673.56 1987 11982.12 1988 11420.29 1989 11244.03 1990 11336.42 1991 11613.15 1992 12706.95 1993 12551.74 1994 12938.03 1995 13380.84 1996 14297.18 1997 15344.52 1998 16566.70 1999 17864.55 2000 19049.11 2001 19685.27 2002 21003.10 2003 23802.15 2004 25417.98 2005 26783.58 2006 30436.15 2007 31583.00 2008 32469.25 2009 30757.12 2010 31666.35 2011 31447.28 2012 31074.89 2013 31624.03 2014 31084.24 2015 31550.10 2016 29393.90 2017 28708.66 2018 28670.28 2019 28545.09 2020 28841.50 2021 29371.96 2022 29824.47 2023 30178.51 2024 30552.52