How much did gas cost in 2013?

January 2013 $3.35 per gallon February 2013 $3.69 per gallon March 2013 $3.74 per gallon April 2013 $3.59 per gallon May 2013 $3.62 per gallon June 2013 $3.63 per gallon July 2013 $3.63 per gallon August 2013 $3.60 per gallon September 2013 $3.56 per gallon October 2013 $3.38 per gallon November 2013 $3.25 per gallon December 2013 $3.28 per gallon