| Año | Valor |
|---|---|
| 1961-01-01 | 10.241657 |
| 1962-01-01 | 5.768856 |
| 1963-01-01 | 2.992476 |
| 1964-01-01 | 3.306727 |
| 1965-01-01 | 10.530019 |
| 1966-01-01 | 7.005025 |
| 1967-01-01 | 13.589212 |
| 1968-01-01 | 0.893855 |
| 1969-01-01 | 0.244628 |
| 1970-01-01 | 9.585508 |
| 1971-01-01 | 12.706460 |
| 1972-01-01 | 14.402090 |
| 1973-01-01 | 1.223500 |
| 1974-01-01 | -39.424758 |
| 1975-01-01 | 15.235823 |
| 1976-01-01 | 11.844163 |
| 1977-01-01 | 3.192123 |
| 1978-01-01 | 11.950059 |
| 1979-01-01 | 27.652977 |
| 1980-01-01 | 31.428090 |
Fuente: World Bank