How much did milk cost in 2015?

January 2015 $3.76 per gallon February 2015 $3.50 per gallon March 2015 $3.46 per gallon April 2015 $3.40 per gallon May 2015 $3.39 per gallon June 2015 $3.37 per gallon July 2015 $3.43 per gallon August 2015 $3.39 per gallon September 2015 $3.39 per gallon October 2015 $3.34 per gallon November 2015 $3.30 per gallon December 2015 $3.31 per gallon