Coca-Cola Classic and Diet Coke cans are on display at a sup [Getty Images]

UNITED STATES - DECEMBER 07: Coca-Cola Classic and Diet Coke cans are on display at a supermarket in New York on Wednesday, December 07, 2005. PepsiCo Inc., the world's second-largest soft-drink maker, may surpass Coca-Cola Co. in market value for the first time after beating its competitor in sales growth and diversifying beyond soda. (Photo by Daniel Barry/Bloomberg via Getty Images)

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