Large capacity builds in developing regions during the next five years will reshape global crude demand to 2021. Higher refinery throughput growth in the Middle East, Southeast Asia and Latin America will keep global product markets well supplied and put pressure on throughput and margins elsewhere. OECD throughput will decline during the forecast as a result. These trends will significantly skew demand for crude oil toward medium and heavy grades. Those varieties will account for roughly 80 percent of demand growth between 2016 and 2021.