Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 10.84 | |
| 1991 | 11.13 | |
| 1992 | 11.3 | |
| 1993 | 12.13 | |
| 1994 | 12.69 | |
| 1995 | 13.09 | |
| 1996 | 13.55 | |
| 1997 | 14.15 | |
| 1998 | 14.88 | |
| 1999 | 15.57 | |
| 2000 | 15.69 | |
| 2001 | 16.08 | |
| 2002 | 16.85 | |
| 2003 | 17.12 | |
| 2004 | 17.46 | |
| 2005 | 17.73 | |
| 2006 | 18.7 | |
| 2007 | 19.79 | |
| 2008 | 20.91 | |
| 2009 | 21.52 |
