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In this Friday, March 22, 2019 file photo, a participant takes a very smoky puff from a marijuana cigarette during at meet and greet at Tommy Chong's Live, Love, and Smoke Tour hosted by GreenTours in the Woodland Hills section of Los Angeles. U.S. retail sales of cannabis products jumped to $10.5 billion last year, a threefold increase from 2017, according to data from Arcview Group, a cannabis investment and market research firm. The figures do not include retail sales of hemp-derived CBD products. (Photo by Richard Vogel,/AP Photo/File)
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