For years the Oz dollar was worth 58-65 cents of the US dollar.
Also, for years the Canadian dollar was worth roughly 2/3 of the US dollar.
Both of those currencies are now valued higher than the US dollar.
As a matter of fact, they are worth virtually the same in terms of exchange rate.
I think the Aussie dollar is still positioned well relative to the US dollar.
It may have crept down a bit, but it is still strong compared to where it once was, which means your buying power with US goods is much higher than it was for a long time.
http://www.xe.com/Regards,
Steve