Legal marijuana is the fastest-growing market in the United States, and it's growing at a rate poised to outpace the expansion of the global smartphone market, according to a new report obtained exclusively by The Huffington Post.

Researchers surveyed hundreds of medical cannabis retailers, processors, dispensary owners and industry leaders over the course of six months this year, and estimated that more than $1.43 billion worth of legal marijuana will be sold in 2013. The report also predicts that figure to grow by 64 percent to $2.34 billion next year. By comparison, recent figures show the U.S. smartphone market expanded by 46 percentfrom 2012 to 2013.

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