Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 12.82 | |
| 1991 | 14.57 | |
| 1992 | 15.36 | |
| 1993 | 15.94 | |
| 1994 | 16.84 | |
| 1995 | 17.48 | |
| 1996 | 18.25 | |
| 1997 | 18.83 | |
| 1998 | 20.26 | |
| 1999 | 21.01 | |
| 2000 | 21.13 | |
| 2001 | 21.94 | |
| 2002 | 22.25 | |
| 2003 | 22.5 | |
| 2004 | 23.23 | |
| 2005 | 24.18 | |
| 2006 | 24.89 | |
| 2007 | 24.88 | |
| 2008 | 26.19 | |
| 2009 | 27.13 |
