Diesel prices fell for the sixth straight week, the Department of Energy reported this week. For the week ending Dec. 19, the U.S. average diesel fuel price decreased 15.8 cents from the previous week to $4.596 per gallon, 97 cents above the same week last year.

Following previous declines of 17.4 cents and 21.3 cents, this was the third week in a row the diesel price fell by double digits, as well as the first time since Feb. 28 the price dipped below $4.60 per gallon. In the Midwest, the diesel price fell 17.4 cents per gallon to $4.477, which was also the lowest Midwest price since Feb. 28, when it was $3.968.