Cannabis sales in Michigan spiked during December, bringing the total to $984.6 million for 2020. Medical cannabis sales accounted for $474 million for the year, while adult-use sales reached $510.7 million, according to New Cannabis Ventures citing data from the Michigan Marijuana Regulatory Agency. Combined cannabis sales, including medical and adult-use, for December amounted to $101 million. - Read the entire article at Benzinga.