Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 92.5 | |
| 1991 | 114.21 | |
| 1992 | 135.07 | |
| 1993 | 164.36 | |
| 1994 | 214.78 | |
| 1995 | 266.22 | |
| 1996 | 312.89 | |
| 1997 | 354.94 | |
| 1998 | 394.26 | |
| 1999 | 416.26 | |
| 2000 | 426.51 | |
| 2001 | 436.14 | |
| 2002 | 452.16 | |
| 2003 | 465.58 | |
| 2004 | 474.91 | |
| 2005 | 482.45 | |
| 2006 | 501.26 | |
| 2007 | 521.6 | |
| 2008 | 553.95 | |
| 2009 | 623.42 |
