"Treatment episodes for problematic morphine use remained relatively stable during 2002–03 to 2007–08 (0.07 per 1000 population in 2007–08). Episodes for problematic oxycodone use doubled, from 0.01 per 1000 population in 2002–03 to 0.02 per 1000 population in 2007–08 (Box 2B)."

Source

Amanda Roxburgh, Raimondo Bruno, Briony Larance and Lucy Burns, "Prescription of opioid analgesics and related harms in Australia," Medical Journal of Australia, 2011; 195 (5): 280-284. doi: 10.5694/mja10.11450
https://www.mja.com.au/journa…
https://www.mja.com.au/system…