Oil sales, according to this report, have dropped to 860,000, 1.2 million and 1.3 million barrels a day in July, September and October respectively. The figure for the similar period in 2011 was 2.1 million barrels per day.
There has been a sharp drop in in non-oil exports because of increased transport and insurance fees, resulting in serious reduction in government and private sector revenues.
The manufacturing and production sectors have been severely hampered due to shortages and high prices of imported raw materials. And higher prices have resulted in a major decrease in consumer demand for goods.
The unstable and unpredictable economic situation has caused a significant drop in private sector and foreign investments and the Iranian currency, rial, has plummeted from 1,200 to 3,500 rials to a dollar.