As of April, McDonald’s global same-store sales had shrunk for 11 consecutive months worldwide. The company, therefore, has good reason to do what many other retailers have done: stop releasing monthly sales numbers. In 2009, Walmart decided to give up reporting monthly same-store sales. So have chains like Abercrombie & Fitch, American Eagle, not to mention Pizza Hut, Taco Bell, Chipotle, and Starbucks.