But here is an interesting table from Wikipedia (on Coke Zero). Notice how the ingredients vary by market. I have noticed how products with the same name can taste different in other countries. I wonder if the ingredients change over time also?
Coke has changed drastically in just the last 30 years. A relative of mine went out and bought several cases of coke when they were about to stop offering it in glass bottles. About 10 years later(this would be in the early nineties I think) I drank some of it with a group of people and we were astonished. It tasted so completely different from anything else on the market it was amazing. It had a much stronger taste and was far less sweet. I think they are constantly changing the recipe to maximize proffits. Ever cheaper and cheaper ingredients.