Gas price averages increased for less than a dozen states in the last week. However, they were large enough jumps to increase to the national average. At $1.78, today’s average is a penny more expensive than last week, 16 cents less than a month ago and $1.11 cheaper than last year at this time.

The Great Lakes and central region saw double-digit increases in a few states, but the bulk of the country saw decreases of a nickel or less. Price fluctuation will continue across the country in coming weeks, especially as more states re-open and motorists begin driving more.

“As some states begin to re-open businesses, those states will likely see demand increase and pump prices will likely follow suit,” Jeanette Casselano, AAA spokesperson, said in a statement. “Although U.S. gasoline demand has incrementally increased, it remains below 6 million b/d.”

The nation’s top 10 largest weekly changes:

• Wisconsin (+27 cents)

• Ohio (+19 cents)

• Indiana (+16 cents)

• Michigan (+13 cents)

• Iowa (+7 cents)

• Illinois (+6 cents)

• Kentucky (+6 cents)

• Utah (-6 cents)

• Montana (-6 cents)

• Wyoming (-5 cents)

The nation’s top 10 least expensive markets:

• Oklahoma ($1.37)

• Arkansas ($1.39)

• Missouri ($1.44)

• Kansas ($1.46)

• Wisconsin ($1.46)

• Mississippi ($1.48)

• Kentucky ($1.49)

• Texas ($1.49)

• Michigan ($1.53)

• Tennessee ($1.54)