Yeah, they only managed to sell a billion dollars worth in 2015, a 40% increase over 2014=>
According to the data, marijuana shops sold $996 million of pot in 2015, an increase of about $300 million from the previous year. Totals for taxes and license fees also grew by about $59 million in the same time period.
http://www.thedenverchannel.com/news/local-news/marijuana/colorado-marijuana-sales-996m-in-2015
Cool.