In the U.S., Apple stores are performing twice as well as Tiffany & Co., the second best retailer, and three times as well as lululemon athletica, the third best retailer. On average each Apple store makes $13 million per quarter.
Average visitors per store has steadied to 250,000 per store per quarter (average for trailing 12 months). This is a quantum increase from about 170,000 per store per quarter in the twelve months ending Q1 2010. The reason for this might be the increase in floor space of newer stores and the renovation of older stores. The new store throughput rate might be an upper bound due to fire regulations.
Dediu notes that there are now about 110 employees per store. That's up from less than have that in 2007.
Check out the charts below for more details...