Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1994 | 0.15 | |
| 1995 | 0.4 | |
| 1996 | 0.54 | |
| 1997 | 0.56 | |
| 1998 | 0.57 | |
| 1999 | 0.67 | |
| 2000 | 0.67 | |
| 2001 | 0.68 | |
| 2002 | 0.71 | |
| 2003 | 0.73 | |
| 2004 | 0.75 | |
| 2005 | 0.78 | |
| 2006 | 0.83 | |
| 2007 | 0.88 | |
| 2008 | 0.93 | |
| 2009 | 0.95 |
