World | marijuana World's Biggest Potheads Live In... ...Australia, New Zealand, where 15% of residents used marijuana in 2009 By Mark Russell Posted Jan 8, 2012 7:59 AM CST Copied Mother-of-five Sonia Webb campaigns for more relaxed drug laws on the 'Cannabus' carrying a 12-metre-long replica of a joint outside the New South Wales State Parliament, May 17, 1999. (Getty Images) It appears that our friends from Down Under are in fact up higher than North Americans—a new study shows that Australians and New Zealanders are the world's top pot smokers, reports the Los Angeles Times. The Lancet found that 15% of Aussies and Kiwis ages 15-64 used some form of marijuana in 2009, as opposed to 11% of North Americans, and just 2.5% of people in Asia. Australians and New Zealanders also are the top users of amphetamines. “Just look at the way we take alcohol as an integral part of everyday life. I think a lot of young people see cannabis in the same way that we see alcohol: as no big deal, as a drug just to use to have a good time,” said one of the study's researchers. The study also found that up to 203 million people around the world use marijuana annually, compared to up to 56 million who use amphetamines and 21 million who use cocaine or opiates such as heroin. Read These Next James Carville has a new 4-word political mantra. "Theo" from The Cosby Show has died at age 54. More big names lend support to Stephen Colbert. Eleven arrested following viral video of honor killing. Report an error