Q3 2019Q2 2019Q1 2019Q4 2018Q3 2018
Same-store sales growth3.8%5.2%2.6%2.8%3.0%
Same-store sales growth excluding gas3.4%4.6%2.3%2.6%2.7%

Notes:Same-store sales, referred to by the company as "comparable store sales," includes sales from domestic stores (including relocated, expanded, converted and remodeled) open for more than 12 months and ecommerce sales