http://reason.com/blog/2014/08/08/despi ... -teenagers
I think the answer is 52 times. That would be 50 States, D.C., and the Federal Gov."Once again, claims that regulating marijuana would leave Colorado in ruins have proven to be unfounded," says Mason Tvert of the Marijuana Policy Project, who was a leader of Colorado's legalization campaign. "How many times do marijuana prohibition supporters need to be proven wrong before they stop declaring our marijuana laws are increasing teen use? They were wrong when they said regulating medical marijuana would do it, and they were wrong when they doubled down and said making marijuana legal for adults would do it."