Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 0 | |
| 1991 | 0 | |
| 1992 | 0 | |
| 1993 | 0.03 | |
| 1994 | 0.57 | |
| 1995 | 0.93 | |
| 1996 | 1.04 | |
| 1997 | 1.09 | |
| 1998 | 1.11 | |
| 1999 | 1.14 | |
| 2000 | 1.18 | |
| 2001 | 1.22 | |
| 2002 | 1.31 | |
| 2003 | 1.46 | |
| 2004 | 1.52 | |
| 2005 | 1.57 | |
| 2006 | 1.59 | |
| 2007 | 1.6 | |
| 2008 | 1.63 | |
| 2009 | 1.71 |
