Marijuana-related tax revenue in Colorado totaled $129 million over the 12-month period ending May 31, 2016 – well exceeding initial estimates of $70 million per year. In Washington, tax revenue totaled $220 million for the 12-montyh period ending June 30, 2016. Regulators had initially projected that retail sales would bring in $162 million in new annual tax revenue. In Oregon, marijuana-related tax revenues are yielding about $4 million per month – about twice what regulators initially predicted.