Thanks for the comments from the productivity commission.
I disagree with them though.
By the time a 30 year old person reaches 65, the majority of people who were aged 65 plus when the immigrant arrived have passed away. So yes of course they will age, but they are hardly adding to the aged population. Meanwhile they are working and paying taxes
Further, this simple info graphic on the census (about half way down) shows that the largest population groups in 2016 are Gen Y and "kids".
http://www.abc.net.au/news/2017-06-27/census-australia-as-100-people/8634318
So, the immigration settings thus far have added to Gen X, quite small, and Gen Y.
These segments of the population are in the prime years for reproduction.
Therefore increasing natural increase in population as well as working age population.
Again, take Japan and let's not forget their economy has been in a bad way for decades.
Their reproduction rate is below replacement level at around 1.4 children per female. Assuming a normal society where it takes two to reproduce, this means that over a certain period of time their population will cease to exist.
You may be able to cherry pick numbers to make a case for their economy/country being run successfully but I will respectfully disagree.
Also thanks for the stats on migrant employment, I will look into this.
But I note the participation level is basically on par. Zero point four percent is pretty thin.
And sadly I reckon the Kiwis are probably responsible for a lot of the non-particpation.
And an increase of zero point eight percent from migration. No, the flood gates are not open.
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