Original: With 27.7% of the daily crude oil production halted due to the depression, oil prices rose further after days of increasing levels, and on September 20 reached a record rate of over $84 per barrel.
Simplified: With 27.7% of the daily crude oil production stopped because of the depression, oil prices rose higher after days of increasing levels, and on September 20 reached a record rate of over $84 per barrel.