TTM20172016201520142013
Avg sales per store (M)$6,471$6,431$6,610$6,543$6,379$6,144
Avg sales per store growth-1.8%-2.7%1.0%2.6%3.8%11.6%
Avg sales per square foot$142$142$146$145$142$138
Avg sales per square foot growth-2.2%-3.0%0.6%2.1%3.3%11.5%

Notes:Calculated based on reported selling square footage and an eMarketer estimate that 80% of a typical store is used for selling space