Found this on cnn
Cities and cocaine
Bills turned up positive for cocaine in these percentages in certain cities:
100 percent: Detroit, Michigan; Boston, Massachusetts; Orlando, Florida; Miami, Florida; Los Angeles, California
88 percent: Toronto, Canada
77 percent: Salt Lake City, Utah
75 percent: Brasilia, Brazil
20 percent: Tokyo, Japan; Beijing, China
0 percent: Zhuzhou, China
Source: Yuegang Zuo, University of Massachusetts Dartmouth