According to the latest statistics released by the World Bank in 2024, among the OPEC countries in 1964, Venezuela ranked first in terms of gross domestic product(GDP), with a total economic volume of $8.1 billion; Nigeria ranked second in terms of GDP, with a total economic volume of $5.55 billion; Iran ranked third in terms of GDP, with a total economic volume of $5.38 billion; Algeria ranked fourth in terms of GDP, with a total economy of $2.91 billion; and Iraq, with a total economy of $2.34 billion, ranked fifth in GDP.
| Rank | Country | GDP |
|---|---|---|
| 1 | Venezuela | $8.1 billion |
| 2 | Nigeria | $5.55 billion |
| 3 | Iran | $5.38 billion |
| 4 | Algeria | $2.91 billion |
| 5 | Iraq | $2.34 billion |
| 6 | Gabon | $0.22 billion |
| 7 | Republic of Congo | $0.19 billion |
| 8 | Equatorial Guinea | $0.01 billion |