Price increases suck. We’ve said it. But they are a function of modern society: prices always go up. The UK’s pound is called a pound because it referred to a pound of silver — admittedly a very, very long time ago. The Big Mac Index is The Economist’s light-hearted guide to the cost of the famous McDonald’s product, and it aims to help people compare currencies. But looking back, the raw data behind it provides an overview of the increase in pricing of the product over time.