Do you think the US drinks more fluid ounces of Coke or Budweiser? My guess is Coke because I know plenty of people that have several cans everyday and a 2 liter sitting at home in the fridge. Plus at work you've got soda machines but no beer machines. On the other hand nobody goes home and pounds a case of Coke, while some guys do that every weekend with Bud. In moderation, Bud is probably better for you too.
My guess is 8.5 Billion Gallons of Coke are consumed in the US each year.