| Año | Valor |
|---|---|
| 1960-01-01 | 6715418.400000 |
| 1961-01-01 | 7404270.650000 |
| 1962-01-01 | 4005989.980000 |
| 1963-01-01 | 10404576.440000 |
| 1964-01-01 | 22546124.320000 |
| 1965-01-01 | 36572986.480000 |
| 1966-01-01 | 41219613.490000 |
| 1967-01-01 | 37943132.800000 |
| 1968-01-01 | 41648875.100000 |
| 1969-01-01 | 42066867.200000 |
| 1970-01-01 | 46379966.090000 |
| 1971-01-01 | 56353201.339020 |
| 1972-01-01 | 70587990.766828 |
| 1973-01-01 | 100471229.424338 |
| 1974-01-01 | 252272315.662618 |
| 1975-01-01 | 196963507.555758 |
| 1976-01-01 | 206830669.181962 |
| 1977-01-01 | 310364752.964208 |
| 1978-01-01 | 315441347.098242 |
| 1979-01-01 | 527840704.000000 |
Fuente: World Bank