The average price of gasoline in the United States dropped for the fifth consecutive week, as refineries are operating at high output and fuel supplies are increasing.

Over the last week, the nation’s average price of gasoline has fallen by 4 cents to $2.75 per gallon, according to GasBuddy’s analysis on Monday. The national average is down 22.6 cents from last month and 22.4 cents per gallon from last year, according to the analysis. The national price of diesel has dropped 5.4 cents in the last week to $3.521 per gallon.