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OKLAHOMA CITY – Oklahoma tax officials say medical marijuana sales topped $18 million last month, marking the seventh straight month of growth for the new industry.

The Oklahoma Tax Commission reported Monday the state collected more than $1.2 million in April from the 7% excise tax on marijuana that is in addition to state and local sales tax also collected from medical marijuana sales.

Marijuana sales have grown significantly each month since dispensaries began selling cannabis in October.

The number of people eligible to obtain the drug also is continuing to climb. The Oklahoma Medical Marijuana Authority says it has approved more than 104,000 patient licenses since August and has licensed more than 1,400 dispensaries and 2,700 commercial growers.

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