Prosecutions for private adult marijuana possession plunged more than 21 percent in 2008, reaching the lowest rate since 2005, according to the Denver City Attorney’s Office.

Prosecutions fell from 2,105 in 2007, to 1,658 in 2008, the year following voters’ adoption of a city ordinance designating adult possession the city’s “lowest law enforcement priority” and Mayor John Hickenlooper’s subsequent appointment of the Denver Marijuana Policy Review Panel.