Gasoline prices are falling in Souith Dakota, at a rate AAA says is faster than what most other states are seeing. The auto club says the statewide average today is $3.03, 11 cents lower than the rate of one week ago. Getting the credit for the decline is a multi-month drop in crude oil prices. AAA says West Texas intermediate crude is down to 77 dollars-19 cents a barrel, far below the high this year of more than $107 a barrel on June 20. The national average is also falling, down to two dollars-93 cents a gallon, the lowest price in nearly four years and 77 cents lower than the 2014 high of three dollars-70 cents on April 28.