It may surprise you to know that Australian newspapers are available
in Orlando, Florida only by special order. I have not placed such an
order. I have not been made aware of any visits by Australian
government officials or been privy to remarks public or private by
Australian dignitaries.
I'm a bit chary of any dictionary that uses a definition of a phrase
that is completely different from the meaning of the phrase as
originally used when that phrase has a relatively modern origin.
The meaning of some words and phrases have transmogrified over time,
but this phrase - appearing first in 1852 - is barely out of the nest
for American readers, and probably an even more recent hatchling in
Oz. It wouldn't seem as if even a country with the ability to produce
a great manipulator of words and phrases such as Rupert Murdoch could
pull off a change like this.
Perhaps Howard can drop back a few centuries and refer to the economic
growth as Brobdingnagian unless Australia's economic growth was merely
haphazard, undirected, and not really all that prodigious. Even if
inappropriate, he could still use it. We expect politicians to play
fast and loose with facts, but not with phrase meanings.