Gallup: More than 33 million American adults currently use marijuana

A new Gallup poll out today finds that percent of American adults who say they currently smoke marijuana has nearly doubled over the past three years.

In 2013, only 7 percent of adults said they were marijuana smokers. When Gallup asked again in July of this year, 13 percent admitted to current marijuana use. That works out to more than 33 million adult marijuana users in the U.S. If America's marijuana users resided in one state, it would be bigger than Texas and second only to California in population.