Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 2.05 | |
| 1991 | 2.05 | |
| 1992 | 2.08 | |
| 1993 | 2.09 | |
| 1994 | 2.12 | |
| 1995 | 2.13 | |
| 1996 | 2.14 | |
| 1997 | 2.15 | |
| 1998 | 2.23 | |
| 1999 | 2.24 | |
| 2000 | 2.2 | |
| 2001 | 2.17 | |
| 2002 | 2.17 | |
| 2003 | 2.15 | |
| 2004 | 2.12 | |
| 2005 | 2.11 | |
| 2006 | 2.12 | |
| 2007 | 2.11 | |
| 2008 | 2.14 | |
| 2009 | 2.16 |
