| Año | Valor |
|---|---|
| 1981-01-01 | 0.275616 |
| 1982-01-01 | -3.938738 |
| 1983-01-01 | -4.042121 |
| 1984-01-01 | -0.200666 |
| 1985-01-01 | -1.676390 |
| 1986-01-01 | -2.573884 |
| 1987-01-01 | 2.463485 |
| 1988-01-01 | 2.909498 |
| 1989-01-01 | 3.790131 |
| 1990-01-01 | 4.635787 |
| 1991-01-01 | 5.266527 |
| 1992-01-01 | 1.646498 |
| 1993-01-01 | 4.269296 |
| 1994-01-01 | 4.667265 |
| 1995-01-01 | 4.678277 |
| 1996-01-01 | 4.361342 |
| 1997-01-01 | 4.954209 |
| 1998-01-01 | 5.029355 |
| 1999-01-01 | 0.426885 |
| 2000-01-01 | 2.507811 |
Fuente: World Bank