Holy smoke, in Feb 1999 jet fuel dropped below 30 cents a gallon and remember paying $1200 BOS-PIT back then in the good old days when US Airways was profitable.
I rented a house in Vermont that winter and remembered paying less than $1 a gallon for premium gasoline in NH. Regular was eighthy something cents.
So the spot peaks increased more than sixfold compared to the 1999 trough. of course the oil price peak to trough maxed out at a factor of five.