TTM20182017201620152014
Restaurant-level operating margin14.9%14.9%15.7%16.7%17.1%16.8%
Restaurant-level operating margin growth (bps)-74-74-100-453524
Operating margin7.2%7.2%8.1%9.7%10.4%8.3%
Operating margin growth (bps)-92-92-162-62204-69
Net profit margin4.0%4.0%4.8%6.2%6.6%5.3%
Net profit margin growth (bps)-77-77-138-39126-44

Notes:Restaurant-level operating margin represents restaurant-level operating income, which equals company-operated restaurants sales minus company-operated restaurant costs, which includes cost of goods sold (food, beverage and packaging), labor, occupancy and other operating costs, expressed as a % of company-operated restaurant sales