Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 23.12 | |
| 1991 | 34.96 | |
| 1992 | 57.54 | |
| 1993 | 82.78 | |
| 1994 | 92.92 | |
| 1995 | 131.38 | |
| 1996 | 192.4 | |
| 1997 | 280.31 | |
| 1998 | 298.15 | |
| 1999 | 285.68 | |
| 2000 | 300.21 | |
| 2001 | 301.74 | |
| 2002 | 306.83 | |
| 2003 | 289.51 | |
| 2004 | 284.45 | |
| 2005 | 284.28 | |
| 2006 | 280.78 | |
| 2007 | 285.59 | |
| 2008 | 303.8 | |
| 2009 | 299.85 |
