TTM20172016201520142013
Restaurant-level operating margin19.4%20.0%21.5%22.1%21.2%21.3%
Restaurant-level operating margin growth (bps)-170-158-5694-19-45
Operating margin7.6%8.5%9.6%8.3%7.4%7.4%
Operating margin growth (bps)-189-11312896-4-3
Net profit margin5.1%6.0%6.4%5.0%4.9%5.1%
Net profit margin growth (bps)-91-3913614-2116

Notes:Restaurant-level operating margin represents domestic restaurant-level operating income, which equals domestic company-operated restaurants sales minus domestic 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