Way too much thought spent on population growth/decline.
availability of credit
terms of trade/ real gross domestic income
and to some degree unemployment
are a lot more important to consider.
Add a dysfunctional government, tax increases, utilities rising sharply, state and local governments under financial pressure ( have to cut spending/ can't print money ) and so on
For the Perth bulls :) if you think j.gillard cares about the one seat she might lose here if she hits us hard next year you are dreamning. I expect her to take an axe to spending in WA to prop up other parts of australia.