The Australian population is an ageing population with a median age of 36.9 years in 2009.“A population is ‘young’ when the median age is less than 20 years and is ‘old’ when the median age…

The Australian population is an ageing population with a median age of 36.9 years in 2009.“A population is ‘young’ when the median age is less than 20 years and is ‘old’ when the median age…