Since the legalization of marijuana in Colorado, drug possession charges have gone down from around 30k in 2010 to 2.5k.. In October of last year, Colorado has made 40 million in marijuana taxes. Adolescent use is slowly declining in that state. Colorado is ranked as one of the fastest growing economies since legalization. Also , traffic fatalities are at an all time low. Legalize it.. Find these facts at drugpolicy.org