| Año | Valor |
|---|---|
| 1986-01-01 | 0.042051 |
| 1987-01-01 | 0.746553 |
| 1988-01-01 | -0.678358 |
| 1989-01-01 | -1.444000 |
| 1990-01-01 | -1.654457 |
| 1991-01-01 | -0.430689 |
| 1992-01-01 | -2.607431 |
| 1993-01-01 | -2.646064 |
| 1994-01-01 | -3.572108 |
| 1995-01-01 | -2.788267 |
| 1996-01-01 | -2.583342 |
| 1997-01-01 | -3.084968 |
| 1998-01-01 | -2.856970 |
| 1999-01-01 | -3.210180 |
| 2000-01-01 | -3.997613 |
| 2001-01-01 | -6.611523 |
| 2002-01-01 | -8.711410 |
| 2003-01-01 | -7.565431 |
| 2004-01-01 | -5.388926 |
| 2005-01-01 | -3.690201 |
Fuente: World Bank