Purchasing power parities (PPP) conversion factor, local currency unit to international dollar
| Year | Value | Footnotes |
|---|---|---|
| 1990 | 1.45 | 1 |
| 1991 | 1.6 | 1 |
| 1992 | 1.72 | 1 |
| 1993 | 1.83 | 1 |
| 1994 | 2.02 | 1 |
| 1995 | 2.15 | 1 |
| 1996 | 2.34 | 1 |
| 1997 | 2.47 | 1 |
| 1998 | 2.73 | 1 |
| 1999 | 2.89 | 1 |
| 2000 | 3.01 | 1 |
| 2001 | 3.13 | 1 |
| 2002 | 3.42 | 1 |
| 2003 | 3.62 | 1 |
| 2004 | 3.78 | 1 |
| 2005 | 3.92 | 1 |
| 2006 | 4.22 | 1 |
| 2007 | 4.42 | 1 |
| 2008 | 4.99 | 1 |
| 2009 | 5.37 | 1 |
Footnotes:
- Estimates are based on regression.
