Migration Needed To Stop Australia's Population Shrinking
Australian Population By goingrank.com.au (November 2015)

The average number of persons per household decreased from 3.31 in 1971 to 2.64 in 2001 due to a change in social attitudes leading to a reduction in the size of families.

• The average family has 1.76 children, well below population replacement, 22% of adults will never have children and 16.2% have only one child.
• Marital figures for 2001 show 6.1 marriages per 1000 people. Median age for brides is 28.1 years and for bridegrooms, 30.2 years. 44% of men and 42% of women will never marry.

Of the world's population, 44% now live in countries with births below population replacement.