Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 6.88 | |
| 1991 | 7.34 | |
| 1992 | 7.81 | |
| 1993 | 8.25 | |
| 1994 | 8.75 | |
| 1995 | 9.28 | |
| 1996 | 9.58 | |
| 1997 | 9.92 | |
| 1998 | 10.04 | |
| 1999 | 9.44 | |
| 2000 | 8.79 | |
| 2001 | 8.41 | |
| 2002 | 8.02 | |
| 2003 | 7.64 | |
| 2004 | 7.41 | |
| 2005 | 7.24 | |
| 2006 | 7.16 | |
| 2007 | 7.09 | |
| 2008 | 7.13 | |
| 2009 | 7.19 |
