How much did gas cost in 2014?

January 2014 $3.32 per gallon February 2014 $3.36 per gallon March 2014 $3.53 per gallon April 2014 $3.66 per gallon May 2014 $3.69 per gallon June 2014 $3.70 per gallon July 2014 $3.63 per gallon August 2014 $3.48 per gallon September 2014 $3.40 per gallon October 2014 $3.18 per gallon November 2014 $2.89 per gallon December 2014 $2.56 per gallon