According to the latest statistics released by the World Bank in 2024, among the OPEC countries in 1973, Iran ranked first in terms of gross domestic product(GDP), with a total economic volume of $27.08 billion; Venezuela ranked second in terms of GDP, with a total economic volume of $17.04 billion; Nigeria ranked third in terms of GDP, with a total economic volume of $15.16 billion; Saudi Arabia ranked fourth in terms of GDP, with a total economy of $14.95 billion; and Algeria, with a total economy of $8.71 billion, ranked fifth in GDP.
| Rank | Country | GDP |
|---|---|---|
| 1 | Iran | $27.08 billion |
| 2 | Venezuela | $17.04 billion |
| 3 | Nigeria | $15.16 billion |
| 4 | Saudi Arabia | $14.95 billion |
| 5 | Algeria | $8.71 billion |
| 6 | Kuwait | $5.41 billion |
| 7 | Iraq | $5.13 billion |
| 8 | Gabon | $0.72 billion |
| 9 | Republic of Congo | $0.54 billion |
| 10 | Equatorial Guinea | $0.08 billion |