Has the average age at which Australians start to use cannabis changed over time?

Among Australians aged 14 years or older who have ever used cannabis, the average age at which they first tried it has remained stable at 19 years between 1995 and 2016.

Among Australians aged 14-29 years who have ever used cannabis, the average age at which they first tried it has increased slightly over time: between 2004 and 2010 the average age of initiation was 16 years; while in 2016 it increased to 17 years.

Source: Australian Institute of Health and Welfare (AIHW). 2016 National Drug Strategy Household Survey.