Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 8.73 | |
| 1991 | 11.39 | |
| 1992 | 14.3 | |
| 1993 | 18.86 | |
| 1994 | 27.46 | |
| 1995 | 41.42 | |
| 1996 | 52.61 | |
| 1997 | 52.52 | |
| 1998 | 54.81 | |
| 1999 | 58.28 | |
| 2000 | 58.97 | |
| 2001 | 64.18 | |
| 2002 | 70.91 | |
| 2003 | 76.84 | |
| 2004 | 84.21 | |
| 2005 | 91.06 | |
| 2006 | 97.78 | |
| 2007 | 102.59 | |
| 2008 | 117.54 | |
| 2009 | 122.29 |
