Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 0 | |
| 1991 | 0 | |
| 1992 | 0 | |
| 1993 | 0.01 | |
| 1994 | 0.01 | |
| 1995 | 0.03 | |
| 1996 | 0.04 | |
| 1997 | 0.08 | |
| 1998 | 0.14 | |
| 1999 | 0.22 | |
| 2000 | 0.32 | |
| 2001 | 0.47 | |
| 2002 | 0.66 | |
| 2003 | 0.84 | |
| 2004 | 0.91 | |
| 2005 | 0.97 | |
| 2006 | 1.03 | |
| 2007 | 1.08 | |
| 2008 | 1.09 | |
| 2009 | 1.12 |
