Crude Oil Long. OPEC raised its forecast for growth in oil demand for 2021. On Tuesday, OPEC raised its forecast for growth in global oil demand this year, in anticipation of a pandemic. According to OPEC’s monthly report, demand will increase by 5.95 million barrels per day (bpd) in 2021, an increase of 6.6%. The upcoming motoring season will certainly be responsible for this, as it represents a seasonality against which there is no defense.