Are you high on the idea of legalizing marijuana?

Chart showing how the attitude toward legalizing marijuana has changed over the years. / Gallup Poll

The number of people in the United States who support the legalization of marijuana has hit a record high.

A Gallup Poll released Monday shows a record number of Americans support decriminalizing and legalizing marijuana. 50 percent are for the idea, 46 percent are against.

That's the first time the "yes" vote has been that high since Gallup started tracking views towards legalizing pot. Compare this poll to one in 1969 when only 12 percent favored the idea.

According to the National Institute on Drug Abuse, "Marijuana is the most commonly abused illicit drug in the United States." The National Survey on Drug Use and Health in 2009 found that "16.7 million Americans aged 12 or older used marijuana at least once in the month prior to being surveyed, an increase over the rates reported in all years between 2002 and 2008."

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