Well H2 you would expect to put on a bit of weight as you age.
AGEING POPULATION
Australia's population, like that of most developed countries, is ageing as a result of sustained low fertility and increasing life expectancy. This is resulting in proportionally fewer children (under 15 years of age) in the population. The median age (the age at which half the population is older and half is younger) of the Australian population has increased by 4.8 years over the last two decades, from 32.1 years at 30 June 1990 to 36.9 years at 30 June 2010. Between 30 June 2009 and 2010 the median age remained relatively steady at 36.8 years. Over the next several decades, population ageing is projected to have significant implications for Australia, including for health, labour force participation, housing and demand for skilled labour (Australia to 2050: Future Challenges, January 2010 (Intergenerational Report 2010), Attorney-General's Department).