TTM20172016201520142013
Stores459449413391362321
Store growth5.5%8.7%5.9%8.0%12.8%7.0%
Total gross square feet (M)2,3652,2692,0091,8541,6521,372
Total gross square feet growth10.1%12.9%8.8%12.2%20.5%8.5%
Avg store gross sq ft5,2005,1004,9004,7004,6004,300
Avg store gross sq ft growth4.3%3.9%2.8%3.9%6.8%1.4%

Notes:calculated based on reported square footage range by concept and an eMarketer estimate that concept stores average 2,500 square feet, factory outlet stores average 4,000 square feet and warehouse outlet stores average 8,000 square feet