OPEC said Thursday its crude oil output fell last month amid compliance with the oil cartel’s agreement to cut production , even as the world’s total oil supply continued to rise on the back of burgeoning U.S. shale growth. In its closely watched monthly oil market report, the Organization of the Petroleum Exporting Countries said the group’s total crude output declined by 201,000 barrels a day in March in month-on-month terms, to average 31.96 million barrels a day. The drop was mainly attributable to lower production in Angola, Venezuela, Algeria and Saudi Arabia. But OPEC said that the world’s total oil supply rose by 180,000 barrels a day last month, mainly as a result of higher output from non-OPEC producers like the U.S., Norway and the U.K. U.S. shale fracking is one of the primary drivers of non-OPEC production, with tight and shale formations expected to account for 94% […]