Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 6.41 | |
| 1991 | 6.69 | |
| 1992 | 7.1 | |
| 1993 | 7.35 | |
| 1994 | 7.28 | |
| 1995 | 7.58 | |
| 1996 | 7.44 | |
| 1997 | 7.48 | |
| 1998 | 7.44 | |
| 1999 | 7.56 | |
| 2000 | 7.38 | |
| 2001 | 7.5 | |
| 2002 | 8.01 | |
| 2003 | 9.17 | |
| 2004 | 10.2 | |
| 2005 | 10.34 | |
| 2006 | 10.23 | |
| 2007 | 10.48 | |
| 2008 | 10.54 | |
| 2009 | 11.06 |
