Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1992 | 0 | |
| 1993 | 0.01 | |
| 1994 | 0.09 | |
| 1995 | 0.41 | |
| 1996 | 0.72 | |
| 1997 | 0.81 | |
| 1998 | 0.89 | |
| 1999 | 1.06 | |
| 2000 | 1.32 | |
| 2001 | 1.44 | |
| 2002 | 1.42 | |
| 2003 | 1.47 | |
| 2004 | 1.56 | |
| 2005 | 1.71 | |
| 2006 | 1.81 | |
| 2007 | 1.98 | |
| 2008 | 2.39 | |
| 2009 | 2.78 |
