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"Fact: Between 40 and 50 percent of people who have tried marijuana report a lifetime total of fewer than 12 days of use. About one-third of pot smokers report having used mariajuana for 10 days or less in the past year. About 6 million of America's 30 million users over the age of 12 use pot on a daily or almost-daily basis according to household survey data &amp;ndash; a fifth of those who say they have used marijuana in the past year &amp;ndash; but they account for about 80 percent of all marijuana consumed.\r\nSources: Marijuana Legalization: What Everyone Needs to Know"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rollingstone.com/culture/lists/top-10-marijuana-myths-and-facts-20120822/myth-most-pot-smokers-are-heavy-users-19691231>