Are younger or older Australian school students aged 12-17 years more likely to have used cannabis?

Among Australian school students aged 12-17 years, cannabis use increases with age. Older students are more likely to have used cannabis in their lifetime, in the past year, past month and past week compared to younger students.

3% of Australian school students aged 12 years have used cannabis in their lifetime; 3% in the past year; 2% in the past month; and 1% in the past week.
6% of Australian school students aged 13 years have used cannabis in their lifetime; 5% in the past year; 3% in the past month; and 2% in the past week.
10% of Australian school students aged 14 years have used cannabis in their lifetime; 9% in the past year; 6% in the past month; and 3% in the past week.
22% of Australian school students aged 15 years have used cannabis in their lifetime; 20% in the past year; 10% in the past month; and 6% in the past week.
29% of Australian school students aged 16 years have used cannabis in their lifetime; 27% in the past year; 15% in the past month; and 9% in the past week.
34% of Australian school students aged 17 years have used cannabis in their lifetime, 32% in the past year; 17% in the past month; and 9% in the past week.