Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1992 | 174.38 | |
| 1993 | 170.12 | |
| 1994 | 229.68 | |
| 1995 | 255.73 | |
| 1996 | 260.66 | |
| 1997 | 263.53 | |
| 1998 | 274.43 | |
| 1999 | 269.43 | |
| 2000 | 271.49 | |
| 2001 | 274.55 | |
| 2002 | 276.99 | |
| 2003 | 274.87 | |
| 2004 | 270.04 | |
| 2005 | 275.19 | |
| 2006 | 276.67 | |
| 2007 | 272.49 | |
| 2008 | 283.27 | |
| 2009 | 290.41 |
