| Año | Valor |
|---|---|
| 1960-01-01 | 373250000.000000 |
| 1961-01-01 | 406000000.000000 |
| 1962-01-01 | 443916666.666667 |
| 1963-01-01 | 478000000.000000 |
| 1964-01-01 | 538583333.333333 |
| 1965-01-01 | 598333333.333333 |
| 1966-01-01 | 662500000.000000 |
| 1967-01-01 | 748250000.000000 |
| 1968-01-01 | 849333333.333333 |
| 1969-01-01 | 920333333.333333 |
| 1970-01-01 | 1006833333.333330 |
| 1971-01-01 | 1084666666.666670 |
| 1972-01-01 | 1286153846.153850 |
| 1973-01-01 | 1263600000.000000 |
| 1974-01-01 | 2101300000.000000 |
| 1975-01-01 | 2405900000.000000 |
| 1976-01-01 | 2733350000.000000 |
| 1977-01-01 | 3229050000.000000 |
| 1978-01-01 | 3760100000.000000 |
| 1979-01-01 | 4510500000.000000 |
Fuente: World Bank