That reminds me of the Vancouver police department report that came out about a year and a half ago. The name has completely gone out of my head, but I'll think about it as I'm driving home.
At any rate, they identified the amount of time they spent responding to downtown east side calls that were related to mental health issues or addictions issues--they look the same sometimes--such as somebody who was causing a kerfuffle outside the door of somebody's shop or being a sort of kamikaze pedestrian and walking in and out of traffic, and so on. The amount of money spent by the VPD to respond to those calls was extraordinarily high. I don't remember the figure. I think the percentage they identified was over 80%.