Soda consumption in one graph

Now that New York City's regulations on the sale of large sodas are close to coming into effect, here's a graph showing an interesting convergence: coffee sales and soda sales are coming close, it lease in terms of revenue. (Note that it doesn't show anything about amounts consumed.) It's from Derek Thompson of The Atlantic. He goes on to point out that part of the explanation is that coffee costs more, but another is that we really are starting to substitute water or sports drinks for soda. Read the column - it's a good one. And let me know if you find consumption data anywhere.