Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 17.49 | |
| 1991 | 18.29 | |
| 1992 | 19.71 | |
| 1993 | 21.67 | |
| 1994 | 24.36 | |
| 1995 | 25.59 | |
| 1996 | 26.91 | |
| 1997 | 26.79 | |
| 1998 | 26.17 | |
| 1999 | 24.66 | |
| 2000 | 22.94 | |
| 2001 | 22.98 | |
| 2002 | 22.59 | |
| 2003 | 23.37 | |
| 2004 | 23.77 | |
| 2005 | 24.65 | |
| 2006 | 26.27 | |
| 2007 | 26.54 | |
| 2008 | 29.59 | |
| 2009 | 30.56 |
