GDP ranking of OPEC countries in 1961

According to the latest statistics released by the World Bank in 2024, among the OPEC countries in 1961, Venezuela ranked first in terms of gross domestic product(GDP), with a total economic volume of $8.19 billion; Nigeria ranked second in terms of GDP, with a total economic volume of $4.47 billion; Iran ranked third in terms of GDP, with a total economic volume of $4.43 billion; Algeria ranked fourth in terms of GDP, with a total economy of $2.44 billion; and Iraq, with a total economy of $1.83 billion, ranked fifth in GDP.