Shutterstock
Burger chains currently account for three of the top five U.S. restaurant outlets by sales.
McDonald's takes the No. 1 slot with $35.9 billion in sales in 2013, followed by Subway ($12.7 billion), Starbucks ($11.7 billion), Wendy's ($8.8 billion), and Burger King ($8.5 billion).
In six years, Wendy's and Burger King will slide down to the No. 6 and No. 8 positions, respectively, according to the analysts' predictions. McDonald's is expected to maintain its top spot with $43.8 billion in sales, followed by Starbucks ($18.8 billion), Subway ($18.4 billion), Dunkin' Donuts ($11.6 billion), and Chick-fil-A ($10.8 billion).
The graph below shows Janney's full predictions for 2020.