Well Australia seemed to relax the rules of entry to allow Tennis players in, thereby blocking actual nationals coming home......nicely done.
With all that is said you have to take on board, but just country geography (island vs mainland, thoroughfare hub vs final destination) but population alongside green space.
New Zealand does well because, you go if you are going, and they have an outside space and are not crammed Cheek to cheek like we are in the U.K.
I think More people in London than in the whole of Canada, Bonkers