Retail Sails (via Fortune) is out today with its list of U.S. retail stores that have the highest sales per square foot, and not so surprisingly, Apple has once again beat out No. 2 Tiffany’s for the top spot. Apple Stores came in with an average of $6,050 per square foot, over $3,000 more than closest competitor Tiffany’s. The full report includes profiles of 200 chains across 15 sectors, and it put Apple Stores at No. 9 for highest sales per store.