Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 67.99 | |
| 1991 | 71.46 | |
| 1992 | 71.52 | |
| 1993 | 73.49 | |
| 1994 | 74.1 | |
| 1995 | 78.1 | |
| 1996 | 80.4 | |
| 1997 | 85.28 | |
| 1998 | 87.67 | |
| 1999 | 89.53 | |
| 2000 | 84.46 | |
| 2001 | 84.89 | |
| 2002 | 85.14 | |
| 2003 | 84.24 | |
| 2004 | 80.49 | |
| 2005 | 78.17 | |
| 2006 | 79.8 | |
| 2007 | 81.01 | |
| 2008 | 83.3 | |
| 2009 | 84.42 |
