High numbers? 1 in 8 American adults smokes pot

The percentage of Americans who say they currently smoke marijuana has nearly doubled since 2013, a new survey finds.

Thirteen percent of adults in the U.S. now say they currently smoke pot -- up from 7 percent in 2013, according to the new Gallup poll.

The percentage of Americans who said they had ever tried marijuana also increased since 2013. This year, 43 percent of Americans said they had tried the drug -- up from 38 percent in 2013, according to the poll. [Where Americans Smoke and Grow Marijuana (Maps)]

Recreational marijuana use is legal in four states (Colorado, Washington, Alaska and Oregon) and the District of Columbia. In addition, half of U.S. states have some version of a medical marijuana law, according to Gallup. In November, four more states will vote on whether to allow medical marijuana.

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