National diesel average sees another steep decline, reports EIA

For the week of December 12, the average price per gallon—at $4.754—fell 21.3 cents, following a 17.4-cent decline, for the week of December 5, to $4.967, for a collective 38.7-cent decline over the last two weeks alone and a total decline of 58.7 cents, going back to the week of October 24.
Source: logistics Mgmt