The national average price for gasoline increased on the week and is at $2.16, however, the average is still cheaper by 42 cents when compared to last year at this time.

“Even with the weekly jumps, gas prices remain relatively cheap with 15 state averages at $2/gallon or less,” said Jeanette Casselano McGee, AAA spokesperson. Pump prices increased on the week despite U.S. gasoline demand falling below 8 million barrels per day.

Last December the national gas price average was $2.57. One week into the month this year, the average is $2.15.

 The nation’s top 10 largest yearly decreases were Arizona (down 69 cents), Nevada (down 65 cents), Idaho (down 64 cents), Alaska (down 63 cents), Utah (down 63 cents), Colorado (down 61 cents), Oregon (down 56 cents), Michigan (down 55 cents), Wyoming (down 54 cents) and Wisconsin (down 54 cents).

The nation’s top 10 least expensive markets include Missouri ($1.81), Mississippi ($1.83), Texas ($1.85), Oklahoma ($1.86), Louisiana ($1.87), Arkansas ($1.87), Wisconsin ($1.89), Tennessee ($1.90), Alabama ($1.90) and South Carolina ($1.91).