| Año | Valor |
|---|---|
| 1963-01-01 | 9999.999776 |
| 1965-01-01 | 9999.999776 |
| 1967-01-01 | 9999.999776 |
| 1968-01-01 | 19999.999553 |
| 1969-01-01 | 180000.007153 |
| 1970-01-01 | 109999.999404 |
| 1971-01-01 | 189999.997616 |
| 1972-01-01 | 649999.976158 |
| 1973-01-01 | 529999.971390 |
| 1974-01-01 | 589999.973774 |
| 1975-01-01 | 769999.980927 |
| 1976-01-01 | 1309999.942780 |
| 1977-01-01 | 1539999.961853 |
| 1978-01-01 | 1879999.995232 |
| 1979-01-01 | 3009999.990463 |
| 1980-01-01 | 3319999.933243 |
| 1981-01-01 | 1669999.957085 |
| 1982-01-01 | 769999.980927 |
| 1983-01-01 | 2430000.066757 |
| 1984-01-01 | 4170000.076294 |
Fuente: World Bank