Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 4.28 | 1 |
| 1991 | 6.21 | 1 |
| 1992 | 10.68 | 1 |
| 1993 | 12.67 | 1 |
| 1994 | 16.67 | 1 |
| 1995 | 19.45 | 1 |
| 1996 | 23.88 | 1 |
| 1997 | 25.59 | 1 |
| 1998 | 27.37 | 1 |
| 1999 | 28.38 | 1 |
| 2000 | 29.7 | 1 |
| 2001 | 30.9 | 1 |
| 2002 | 32.57 | 1 |
| 2003 | 35.14 | 1 |
| 2004 | 38.88 | 1 |
| 2005 | 43.36 | 1 |
| 2006 | 45.62 | 1 |
| 2007 | 48.47 | 1 |
| 2008 | 56.96 | 1 |
| 2009 | 62.64 | 1 |
Footnotes:
- Estimates are based on regression.
