Q2 2018Q1 2018Q4 2017Q3 2017Q2 2017
Same-store sales growthN/AN/A2.7%2.4%0.9%
Same-store sales growth excluding gas1.6%1.9%1.5%1.1%0.7%

Notes:Same-store sales, referred to by the company as "identical sales" or "identical supermarket sales," includes sales from stores (excluding expansions & relocations) open for 5 full quarters