| Año | Valor |
|---|---|
| 1974-01-01 | 19999.999553 |
| 1975-01-01 | 9999.999776 |
| 1980-01-01 | 289999.991655 |
| 1981-01-01 | 319999.992847 |
| 1982-01-01 | 370000.004768 |
| 1983-01-01 | 1350000.023842 |
| 1984-01-01 | 2019999.980927 |
| 1985-01-01 | 1409999.966621 |
| 1986-01-01 | 2180000.066757 |
| 1987-01-01 | 2230000.019073 |
| 1988-01-01 | 2440000.057220 |
| 1989-01-01 | 1690000.057220 |
| 1990-01-01 | 2539999.961853 |
| 1991-01-01 | 3059999.942780 |
| 1992-01-01 | 3480000.019073 |
| 1993-01-01 | 3000000.000000 |
| 1994-01-01 | 2230000.019073 |
| 1995-01-01 | 2349999.904633 |
| 1996-01-01 | 3009999.990463 |
| 1997-01-01 | 3839999.914169 |
Fuente: World Bank