Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1992 | 29.06 | |
| 1993 | 103.91 | |
| 1994 | 189.97 | |
| 1995 | 184.86 | |
| 1996 | 263.81 | |
| 1997 | 352.02 | |
| 1998 | 379.08 | |
| 1999 | 399.02 | |
| 2000 | 430.75 | |
| 2001 | 445.2 | |
| 2002 | 442.27 | |
| 2003 | 454.64 | |
| 2004 | 479.27 | |
| 2005 | 522.49 | |
| 2006 | 531.95 | |
| 2007 | 563.98 | |
| 2008 | 679.22 | |
| 2009 | 724.45 |
