Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 0.27 | |
| 1991 | 0.43 | |
| 1992 | 0.6 | |
| 1993 | 0.78 | |
| 1994 | 1.04 | |
| 1995 | 1.31 | |
| 1996 | 1.51 | |
| 1997 | 1.7 | |
| 1998 | 1.86 | |
| 1999 | 1.95 | |
| 2000 | 2.07 | |
| 2001 | 2.11 | |
| 2002 | 2.08 | |
| 2003 | 2.09 | |
| 2004 | 2.09 | |
| 2005 | 2.13 | |
| 2006 | 2.09 | |
| 2007 | 2.01 | |
| 2008 | 2.01 | |
| 2009 | 2.02 |
