20172016201520142013
Same-store sales growth4.1%12.9%5.8%-1.6%-4.3%
Superstores same-store sales growth3.0%12.8%6.8%-0.9%-4.6%
Small Format Stores same-store sales growth0.9%10.9%0.8%-5.0%-2.4%

Notes:Same-store sales, referred to by the company as "comparable store sales," includes sales from stores open at least 12 months