Can you explain what you see in this graph? I'm baffled, I don't know what "suspects" means, nor why Canada has 10x as many as Mexico. (Presumably the x-axis is

Can you explain what you see in this graph? I'm baffled, I don't know what "suspects" means, nor why Canada has 10x as many as Mexico. (Presumably the x-axis is police per million population, or similar.)