Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 250.22 | |
| 1991 | 231.83 | |
| 1992 | 215.39 | |
| 1993 | 220.62 | |
| 1994 | 283.48 | |
| 1995 | 330.54 | |
| 1996 | 335.71 | |
| 1997 | 337.94 | |
| 1998 | 359.18 | |
| 1999 | 352.8 | |
| 2000 | 357.66 | |
| 2001 | 378.53 | |
| 2002 | 400.91 | |
| 2003 | 420.72 | |
| 2004 | 427.04 | |
| 2005 | 436.29 | |
| 2006 | 441.31 | |
| 2007 | 441.1 | |
| 2008 | 452.63 |
