Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1994 | 0.96 | |
| 1995 | 1.7 | |
| 1996 | 3.24 | |
| 1997 | 3.9 | |
| 1998 | 5 | |
| 1999 | 6.97 | |
| 2000 | 11.54 | |
| 2001 | 21.89 | |
| 2002 | 25.75 | |
| 2003 | 27.67 | |
| 2004 | 29.92 | |
| 2005 | 33.6 | |
| 2006 | 35.91 | |
| 2007 | 37.9 | |
| 2008 | 39.35 | |
| 2009 | 41.53 |
