The OPEC Monthly Oil Market Report for April 2021 was published this past week. The last month reported in each of the charts that follow is March 2021 and output reported for OPEC nations is crude oil output in thousands of barrels per day (kb/d).

Only a small revision in OPEC output from last month’s February estimate (-6 kb/d), OPEC output was up by 201 kb/d in March. Most of the March increase in output was from Iran (+137 kb/d).