20182017201620152014
Same-store sales growth-2.1%-2.1%-0.7%2.2%0.2%
US same-store sales growth-1.8%-1.1%-1.2%2.9%-0.3%
International franchise same-store sales growth-2.7%-3.7%0.2%0.4%1.6%

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