OPEC oil output ‌in May hit its lowest in more than two decades, according to a Reuters survey.

The survey is based on flow data from financial group LSEG, information from other companies that track flows, such ⁠as ​Kpler, and information provided by sources at ​oil companies, OPEC, and consultants.

The development followed U.S. naval blockade that cut Iran’s exports, and Iran’s…