According to the latest statistics released by the World Bank in 2024, among the OPEC countries in 1974, Iran ranked first in terms of gross domestic product(GDP), with a total economic volume of $46.21 billion; Saudi Arabia ranked second in terms of GDP, with a total economic volume of $45.41 billion; Venezuela ranked third in terms of GDP, with a total economic volume of $26.1 billion; Nigeria ranked fourth in terms of GDP, with a total economy of $24.85 billion; and Algeria, with a total economy of $13.21 billion, ranked fifth in GDP.
| Rank | Country | GDP |
|---|---|---|
| 1 | Iran | $46.21 billion |
| 2 | Saudi Arabia | $45.41 billion |
| 3 | Venezuela | $26.1 billion |
| 4 | Nigeria | $24.85 billion |
| 5 | Algeria | $13.21 billion |
| 6 | Kuwait | $13.01 billion |
| 7 | Iraq | $11.52 billion |
| 8 | Gabon | $1.54 billion |
| 9 | Republic of Congo | $0.59 billion |
| 10 | Equatorial Guinea | $0.09 billion |