This shows that 41.7% of Americans older than 12 in 2001 reported ever using illicit drugs, and 12.6% reported use within the last year. In Australia, the figures are 38.1 and 15.3 percent, respectively (though this counts 14 year olds and up rather than 12 year olds and up). Not a huge difference. | This shows that 41.7% of Americans older than 12 in 2001 reported ever using illicit drugs, and 12.6% reported use within the last year. In Australia, the figures are 38.1 and 15.3 percent, respectively (though this counts 14 year olds and up rather than 12 year olds and up). Not a huge difference. |