I'm not sure. I don't have that kind of information.
Australia is a country where the population is relatively mobile. My impression is that people would often go back to their home city or their home state for particular celebrations. If they were originally from North Queensland and currently lived in Melbourne or Sydney, a lot of people did go back for those particular celebrations, and the reverse was the case as well.
I don't think there was specific funding for particular government or national council messaging to encourage that. It was an organic process. People felt that marking their centenary was a natural manifestation of their pride in their home state or home city.