Granny the reason it is called The World Helicopter Championships is because it is the WORLD. Next years event will be the 12th WORLD Helicopter Championships and the 11th was held in Austria in 2002.
This event attracted 15 Countries from around the WORLD including Japan, Russia, China, and USA. 56 civilian and military crews competed and it attracted 65,000 public visitors.
Any Country can enter the Championships as long as they are member of the FAI (
www.fai.org) which I see from the FAI website Australian aero club are members. Why not get a team up and enter.