Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1994 | 1.11 | |
| 1995 | 1.4 | |
| 1996 | 1.68 | |
| 1997 | 1.83 | |
| 1998 | 1.94 | |
| 1999 | 2.65 | |
| 2000 | 3.36 | |
| 2001 | 3.59 | |
| 2002 | 3.72 | |
| 2003 | 4.07 | |
| 2004 | 4.46 | |
| 2005 | 4.83 | |
| 2006 | 5.27 | |
| 2007 | 5.76 | |
| 2008 | 6.26 | |
| 2009 | 6.28 |
