Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 6.46 | |
| 1991 | 6.79 | |
| 1992 | 7.09 | |
| 1993 | 7.35 | |
| 1994 | 7.61 | |
| 1995 | 8.04 | |
| 1996 | 8.19 | |
| 1997 | 8.28 | |
| 1998 | 8.17 | |
| 1999 | 7.74 | |
| 2000 | 7.36 | |
| 2001 | 7.02 | |
| 2002 | 6.73 | |
| 2003 | 6.48 | |
| 2004 | 6.37 | |
| 2005 | 6.43 | |
| 2006 | 6.55 | |
| 2007 | 6.72 | |
| 2008 | 7.03 | |
| 2009 | 7.14 |
