9. Australia
Use: 10.3% of the population
Status: Illegal
population: 23.13 million (2013) Approx
More than 10% of the population down under like to relax by taking a puff or two.
That number rises considerably for those who have tried it once and for occasional smokers. Cannabis is the most widely used illicit drug in Australia.
Although cannabis is illegal in Australia, the country has largely avoided a punitive drug policy.