Record immigration in Australia: 400k will arrive this year, page-26

There are many reasons why we need immigration, just for a start we need more people paying tax to support an ageing population.
If we don't do it this way, we could increase tax to pay for the ederly.
Then there is all the other issues in Australia that need funding.
And it is a huge list.
We have just been through a large boom but where did the average Australian benefit.