The National Iranian Oil Company exports 2.5 million barrels of crude oil and gas condensates per day to customers from Asia to Europe and the Central Bank of Iran receives the full sale revenues in different currencies, CBI said in a statement.

Oil share in Iran's economy has been decreased to about 20 percent which is a reasonable figure compared to the resource-rich countries, said Vice-President for Science and Technology on Wednesday.

Managing director Sirous Kianersi made the statement in India last week after meeting with the country's Oil Minister Dharmendra Pradhan, Shana reported.