Chipotle Mexican Grill, Inc. (CMG) is a quick-service restaurant providing a focused menu of burritos, tacos, and salads. Chipotle's operating income taken from its income statements for two recent years is as follows: Chipotle Mexican Grill, Inc. Operating Income For the Years Ended December 31 (in millions) Line Item Description Year 2 Year 1 Revenue: Food and beverage $7,457 $5,921 Delivery service 90 64 Total revenues $ 7,547 $ 5,985 Restaurant operating costs