According to this paper by the National Bureau of Economic Research, the average loss of value per day of delay from the cargo on these ships is between 0.6 and 2.2 percent [1]. According to other research I've seen, somewhere between 12% and 30% of daily global sea trade (the 30% figure may be out large cargo freighters specifically, not sure) goes through the Suez Canal. Anyone want to do the math?

1) https://www.nber.org/digest/jun12/time-trade-barrier