How did the hole in the ozone layer occur over Antarctica ad not over Europe or North America?

i ve read somewhere that Europe and North America are the highest producers of poisonous gases like CFCs..then why did the hole in the ozone layer occur over Antarctica and not over Europe or North America where they had their origin??How did the hole in the ozone layer occur over Antarctica ad not over Europe or North America?
This nobody knows but there are many theroies... Scientists are still trying to figure this out and the hole over africa. Maybe it has something to do with the magnetic properties of the poles always shifting the ozone. Like i said all is in theory at this point.How did the hole in the ozone layer occur over Antarctica ad not over Europe or North America?
It think it has to do with the magnetic field of the Earth. The harmful particles rise into the ozone, and then slowly ';ride'; the magnetic field towards the poles.
Ozone was afraid of the NAFTA .......