Several of the entries on the list are not independent countries (French Guiana, for example, has a different rate to the EU despite being part of France and the EU) and one doesn’t even have a human population (Heard & McDonald Islands, an Australian territory near Antarctica)
Heard & McDonald Islands! It's an Australian territory literally thousands of kilometres from the nearest permanent human settlement. Scientists stop by to check on the penguins sometimes. It got its own entry on the list