Interesting study by Deloittes on Australian superannuation until 2033.
Here's the research paper.
With these projections:
Our projections show the pool of assets growing to $7.6 trillion by 2033, or in real terms from less than 100% to approximately 180% of GDP over the next 20 years. The government has stated its intention to defer the
increase in the Superannuation Guarantee by two years. This will reduce assets by only 1% over the next 20 years.
The number of Australians over the age of 65 will increase by 75% over the next 20 years (from 3.3 million in 2012 to 5.8 million in 2032), and at a much faster rate than the working population. The implication for government is clear. There will be proportionately fewer working Australians available to fund those in retirement.