MINYANVILLE ORIGINAL For the second consecutive year Apple (NASDAQ:AAPL) has used its retail space the most efficiently out of 200 US retailers surveyed generating the most sales per square foot according to RetailSails. According to RetailSails' 2012 Chain Store Productivity Guide (via AppleInsider) Apple generated $6 050 in sales per square foot of retail floor space. In 2011 Apple produced $5 647 in sales per square foot. Tiffany’s (NYSE:TIF) came in a distant second at $3 107 in sales per square foot and Lululemon Athletica (NASDAQ:LULU) came in third with $1 936 in sales per square foot. (View the ...