20182017201620152014
Same-store sales growth-1.3%-2.1%-1.9%1.9%0.6%
Company-operated same-store sales growth-1.0%-2.1%-2.4%1.7%0.6%
Franchise same-store sales growth-2.1%-2.1%-0.7%2.2%0.2%

Notes:Same-store sales, referred to by the company as "comparable restaurant sales," includes sales from restaurants open at least 18 months