Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 0.69 | |
| 1991 | 1.34 | |
| 1992 | 2.19 | |
| 1993 | 3.28 | |
| 1994 | 4.63 | |
| 1995 | 6.41 | |
| 1996 | 7.99 | |
| 1997 | 9.36 | |
| 1998 | 10.21 | |
| 1999 | 10.56 | |
| 2000 | 10.7 | |
| 2001 | 10.86 | |
| 2002 | 12.18 | |
| 2003 | 14.22 | |
| 2004 | 15.12 | |
| 2005 | 15.31 | |
| 2006 | 15.78 | |
| 2007 | 16.59 | |
| 2008 | 17.23 | |
| 2009 | 18.52 |
