Under Johnson's leadership, Apple's retail stores achieved a record level of growth, exceeding a billion dollars in annual sales within two years of their debut, surpassing the previous record set by the Gap clothing retailer. In 2012, Apple operated more than 400 stores, with outlets in Australia, Canada, China, France, Germany, Italy, Switzerland, United Kingdom, United States, Hong Kong and Japan. According to "Fortune" "Saks, whose flagship store is down the street, generates sales of $362 per square foot a year. Best Buy stores turn $930 - tops for electronics retailers - while Tiffany & Co. takes in $2,666. Audrey Hepburn liked Tiffany's for breakfast, but at $4,032 per square foot, Apple is eating everyone's lunch". In 2011, Apple Stores in the United States had revenue of $473,000 per employee. According to the research firm RetailSails, the Apple Store chain ranked first among U.S. retailers in terms of sales per unit area in 2011, with sales of per square foot, almost double that of Tiffany & Co., the second retailer on the list.