There's no denying it: chocolate is one of the most popular foods in the world. You probably don't think about the multibillion-dollar industry behind your favourite sweet treat, but it's not just a "world of pure imagination" (to quote Willy Wonka). It's also a world of mind-blowing numbers, rising costs, and in some cases, exploitation.

Read on for our round-up of astonishing chocolate facts and statistics, from the nations that consume the most to how much the priciest bars cost. Plus, find out why this much-loved indulgence is endangered – and could even become extinct – in the not-too-distant future...

All dollar amounts in US dollars.