20172016201520142013
Same-store sales growth-7.2%-13.5%-4.4%0.0%0.0%
Same-store transaction growth-4.2%-10.2%-6.3%-4.8%-2.6%
Same-store avg transaction value growth-3.0%-2.4%1.8%4.8%2.7%
Same-store units per transaction growth1.7%1.7%0.4%3.5%3.7%
Same-store selling price per unit growth-4.7%-4.1%1.4%1.3%-1.0%

Notes:Same-store sales, referred to by the company as "comparable store sales," includes sales from stores (including remodeled, expanded, and/or relocated) if they were open in the prior year on the first day of the fiscal period being presented, and excludes ecommerce sales