How much did gas cost in 2012?

January 2012 $3.40 per gallon February 2012 $3.57 per gallon March 2012 $3.87 per gallon April 2012 $3.93 per gallon May 2012 $3.79 per gallon June 2012 $3.55 per gallon July 2012 $3.45 per gallon August 2012 $3.71 per gallon September 2012 $3.86 per gallon October 2012 $3.79 per gallon November 2012 $3.49 per gallon December 2012 $3.33 per gallon