Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 15.31 | |
| 1991 | 29.03 | |
| 1992 | 74.88 | |
| 1993 | 206.06 | |
| 1994 | 310.47 | |
| 1995 | 407.49 | |
| 1996 | 566.4 | |
| 1997 | 688.61 | |
| 1998 | 843.94 | |
| 1999 | 1047.1 | |
| 2000 | 1276.55 | |
| 2001 | 1507.06 | |
| 2002 | 1813.37 | |
| 2003 | 2152.6 | |
| 2004 | 2473.16 | |
| 2005 | 2830.33 | |
| 2006 | 2989.18 | |
| 2007 | 3216.01 | |
| 2008 | 3482.55 | |
| 2009 | 3963.15 |
