From KRDO in Colorado: “Two marijuana questions will be on the November ballot in Pueblo County. Pueblo County Commissioners voted Monday to let the voters decide whether to put an excise tax on marijuana grows that send recreational pot to facilities. The tax would increase starting in 2016 by one percent each year for five years. The revenue from the tax, if approved, would go toward college scholarships and community projects.”
Other phase-ins of rates are mentioned here: https://newrevenue.org/2015/02/21/phasing-rates-in/
Quote is from http://www.krdo.com/news/pueblo-county-voters-will-decide-on-two-marijuana-ballot-questions-in-november/35024888