Iran's debts to the same banks also decreased by $675 million and stood at $10.088 billion at the end of March 2012.
Hence, the total transactions of Iran with these banks amounted to $25.528 billion by the end of March 2012 which shows 1.7 percent increase in comparison with the fourth quarter of 2011.
The rise in Iran's financial transactions with these 39 banks, most of which are from European countries, came as the US has growingly increased its pressure on foreign banks to reduce their transactions with Iran.
During the last two years, Iran has been replacing dollar with other currencies in its trade with the outside world.
Iran has replaced dollar in its oil trade with India, China, Russia and Japan. Late in November, the Reserve Bank of India (RBI) issued the needed permission to the Central Bank of Iran to open rupee accounts with two Indian banks, namely UCO and IDBI, as a long-lasting solution to the two countries' payment problems.
Russia, opposing oil sanctions against Iran, has long promoted the ruble as an international currency which could be used in bilateral settlements.
In 2010, Moscow began offering to exchange ruble for Chinese Yuan as the two nations look to boost bilateral transactions in their own currencies and reduce their reliance on the dollar.
Iranian officials have underlined that the country plans to increase its non-oil exports to over $70bln in the current Iranian year.
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