My understanding of how they come up with this list is that they take the lists of all their sister publications and paste them together somehow. For example, you can see that the Australian courses are in the same order as the recent list from Australian Golf Digest ... and I assume [without checking] that the UK and Continental Europe courses follow the same order as the lists printed in Golf World (UK). I don't know how exactly they paste them all together, but I doubt it has a lot to do with numbers, and I suspect there are a fair number of token entries there at the end so that more countries are represented.