| Año | Valor |
|---|---|
| 1981-01-01 | -1.924837 |
| 1982-01-01 | -6.013474 |
| 1983-01-01 | -6.085978 |
| 1984-01-01 | -2.310572 |
| 1985-01-01 | -3.734705 |
| 1986-01-01 | -4.600384 |
| 1987-01-01 | 0.324803 |
| 1988-01-01 | 0.751405 |
| 1989-01-01 | 1.615876 |
| 1990-01-01 | 2.458350 |
| 1991-01-01 | 3.095534 |
| 1992-01-01 | -0.406135 |
| 1993-01-01 | 2.221397 |
| 1994-01-01 | 2.660872 |
| 1995-01-01 | 2.719496 |
| 1996-01-01 | 2.448118 |
| 1997-01-01 | 3.076061 |
| 1998-01-01 | 3.191220 |
| 1999-01-01 | -1.311181 |
| 2000-01-01 | 0.762647 |
Fuente: World Bank