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According to the latest statistics released by the World Bank in 2024, among the OPEC countries in 1977, Iran ranked first in terms of gross domestic product(GDP), with a total economic volume of $80.6 billion; Saudi Arabia ranked second in terms of GDP, with a total economic volume of $74.19 billion; Venezuela ranked third in terms of GDP, with a total economic volume of $36.21 billion; Nigeria ranked fourth in terms of GDP, with a total economy of $36.04 billion; and United Arab Emirates, with a total economy of $24.87 billion, ranked fifth in GDP.