Cannabis is legal in my country but I don't think we have any statistics yet on the effects of legalization. It's heavily government controlled from production to dispensing to consumption. The public is a little confused as to the laws because some pertinent laws are federal, some provincial, and some municipal. The result has been people getting caught breaking laws they didn't know about or were confused about. Oh, and the number of pets brought to vets for cannabis ingestion/poisoning has increased. It will be interesting to see where all this goes in the future.