It depends on if you are referring to the world or Country average price or a specific state.
As of June 9, 2010, the average price of a gallon of regular gas in Missouri is $2.518
As of June 9, 2010, the US national average price of a gallon of regular gas is $2.713
As of June 9, 2010, the US national average price of a gallon of regular gas is $2.713
As of June 9, 2010, the average price per gallon for regular in Nevada is $2.881
As of June 9, 2010, the average price for a gallon of regular gas in Atlanta is $2.571
As of June 9, 2010, the average per-gallon price of regular gas in Orlando is $2.584
In June 2009, the US national average price of a gallon of regular gasoline was $2.631 - equal to about $2.67 per gallon in 2010 dollars.
In June 2006, the US national average for a gallon of regular gasoline was $2.917 - the equivalent of about $3.16 per gallon in 2010.
In June 1986, the US national average price of a gallon of regular unleaded gasoline was 95.5 cents - equivalent to about $1.91 per gallon in 2010.
As of June 9, 2010, the US national average for a gallon of regular gasoline is $2.713 and $2.981 per gallon for diesel fuel.
As of June 9, 2010, the US national average for a gallon of regular gasoline is $2.713 and $2.981 per gallon for diesel fuel.
As of June 8, 2010, the national average for one gallon of regular gasoline is about $2.70