The first-of-its-kind analysis, gathered by ArcView Market Research, spans legal, medical and bootleg pot markets opposite both a United States and Canada. At around $46 billion, a bootleg marketplace constituted 87 percent of pot sales in 2016 (a diminution from 90 percent in 2015), dwarfing both medical and authorised sales.
Article source: http://www.huffingtonpost.com/2017/01/17/legal-cannabis-industry-growth-2016-marijuana_n_14232834.html?utm_hp_ref=los-angeles&ir=Los+Angeles