| Año | Valor |
|---|---|
| 1986-01-01 | 0.044679 |
| 1987-01-01 | -0.877507 |
| 1988-01-01 | 0.437740 |
| 1989-01-01 | 1.463695 |
| 1990-01-01 | 1.756120 |
| 1991-01-01 | -0.079448 |
| 1992-01-01 | 2.205414 |
| 1993-01-01 | 3.561884 |
| 1994-01-01 | 1.562074 |
| 1995-01-01 | 2.007131 |
| 1996-01-01 | 3.504842 |
| 1997-01-01 | 3.318616 |
| 1998-01-01 | 3.138247 |
| 1999-01-01 | 2.681691 |
| 2000-01-01 | 2.987377 |
| 2001-01-01 | 6.939686 |
| 2002-01-01 | 6.557719 |
| 2003-01-01 | 8.665899 |
| 2004-01-01 | 7.171016 |
| 2005-01-01 | 3.736005 |
Fuente: World Bank