It is not clear how much the volume of crude oil and condensates exports increased, as Tehran keeps oil exports a state secret due to US third-party sanctions that can penalize companies involved in transactions. 

But Iran's claim of a 580-percent rise in revenues is hard to explain. Although some revenues might not have officially enetred government coffers, but the Tueday claim of a 580-percent increase in revenues just does not add up.

Source: Iran International