What is the average age at which Australians start to use meth/amphetamine?

Among Australians (aged 14 years and older) who have ever used meth/amphetamine, the average age at which they first tried it was 22 years.

Source: Australian Institute of Health and Welfare (AIHW). 2013 National Drug Strategy Household Survey.

† Meth/amphetamine: This term covers a range of stimulant drugs including methamphetamine and amphetamine. The National Drug Strategy Household Survey (NDSHS) described meth/amphetamine as including drugs commonly known as speed, ice, crystal, whizz, Ritalin, or pseudoephedrine-based cold and flu tablets.