Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 1.55 | |
| 1991 | 1.53 | |
| 1992 | 1.5 | |
| 1993 | 1.48 | |
| 1994 | 1.47 | |
| 1995 | 1.47 | |
| 1996 | 1.48 | |
| 1997 | 1.48 | |
| 1998 | 1.49 | |
| 1999 | 1.48 | |
| 2000 | 1.51 | |
| 2001 | 1.51 | |
| 2002 | 1.56 | |
| 2003 | 1.58 | |
| 2004 | 1.57 | |
| 2005 | 1.6 | |
| 2006 | 1.59 | |
| 2007 | 1.58 | |
| 2008 | 1.57 | |
| 2009 | 1.61 |
