As the U.S. and Europe continue to impose sanctions on Iran, oil production in the 12-nation Organization of the Petroleum Exporting Countries has fallen to its lowest point since the beginning of the year, according to Reuters.
A survey from the news source found that exports fell for two of the group's African members, Angola and Nigeria, reducing Septembers average oil production through September to 21.09 million barrels per day.
That's a roughly 1.4 percent drop from numbers in August, when Saudi Arabia was continuing a strong push to keep up oil output to replace lost production from Iran.
"It's mostly Nigeria and Angola, just loading variations," Paul Tossetti, senior energy adviser at PFC Energy, told Reuters. "I think Iranian output has bottomed out, but I would guess it's going to fall steadily due to lack of investment and sanctions."
Meanwhile, the world's largest oil consumer, the U.S., saw imports drop 7.2 percent from the year before in July, according to MarketWatch. The country's booming oil exploration has helped reduce need for OPEC oil, as it has started to draw more of its imports from nearby Canada.