The analysis released Feb. 27, 2013 by the EIA reported that the national average diesel price increased less than a penny to remain at $4.16 per gallon, 11 cents higher than last year at this time. The East Coast price also increased by less than a penny to remain at $4.20 per gallon, while the West Coast price decreased by less than a penny to remain at $4.30 per gallon. The average price in the Midwest went down one cent to $4.12 per gallon. The Gulf Coast price is $4.09 per gallon, two cents higher than last week. The Rocky Mountain price rose three cents to $4.06 per gallon.