What would be the greatest expense to Australia ? Defence ? Health ? Law & Order (for want of a better description) ?
From my experience Education & the Public Service are the biggest Dollar guzzlers, not the actual service but the bureaucrats if we consider the value we get for our tax dollars.
Politicians are up there in the ranks with waste vastly outnumbering value.
Govt taxes are over the top. Qld vehicle registration is nothing short of insane.

The economic outlook for Australia according to
the experts remains positive, with the economy
expected to sustain its 29 year recession-free
track record out to 2020. However, we're told that
a potential slowdown in jobs growth, rising household
debt, and weak exports could pose challenges.

There's more on the following link:

http://www2.deloitte.com/insights/us/en/economy/asia-pacific/australia-economic-outlook.html

Perfection is never possible, the task most governments have is to please as many as they can.
Buying Australian isa complex issue, I paid more, for every iten Dick Smith sold.
Young visitors far too impressed with themselves said I was just being hard to get on with, for not buying Vegemite then owned by others than Australians

Belly are you trying to copy nicknamenick, very unbecoming.

Quote
"Bleeding Aldis! beggars importing all that foreign food! beggars, they know shoppers will buy the cheap stuff
Radios we do not make them here, cost three times the price to buy if we did.
Yes Alf Garnett thinks it is our governments fault we buy on price
Business come about when proofit can be made."

in effect you accuse me of lowing the standard of debate?
thought we reached the cellar long ago.
My thoughts are in fact the truth.
We are, like it or not, forever part of world trade
any retreat would indeed make us a banana republic.
Dick Smith saved farmers sold us products and donated the profit, we still would not buy them.
Would you open a factory making a product, selling for a third of your price? madness to not see it can never be

Trying to buy Australian Made is not so straight
forward. I've found that Made in Australia labels
on products often can be deceiving. In some
cases they're - packaged in Australia not Made in
Australia. Also check the ingredients for food
products - not all of the foods contain Australian
products - grown in Australia - often they're from
somewhere else. Aldi is notorious with their labelling
as is Woollies. Coles seems to be more clear.