How much did ground beef cost in 1988?

January 1988 $1.31 per pound February 1988 $1.32 per pound March 1988 $1.34 per pound April 1988 $1.34 per pound May 1988 $1.37 per pound June 1988 $1.39 per pound July 1988 $1.37 per pound August 1988 $1.37 per pound September 1988 $1.37 per pound October 1988 $1.39 per pound November 1988 $1.41 per pound December 1988 $1.40 per pound