Higher than you think. They have a lot of problems with triad type gangs who aren't deterred by caning. For them its like an initiation rite such as numerous tattoos.
Triad type gangs would be Organised Crime and the only people likely to get a caning would be the low level thugs - Who, oddly enough are paid to deal in violence.
Compare and contrast with the drunken idiots that cause mayhem in the UK most weekends - Where up in front of the beak on Monday morning, straight out the back and given 4 / 6 lashes would all but end that particular nonsense very quickly.
This is in today's Times
At first glance the hot and dusty city of Bakersfield, nestled deep in California’s Central Valley interior, is an unlikely candidate for a murder hotspot.Howev
Liberal leaders and soft punishments are being blamed for an explosion in murders, gang violence and drugs offences.
Singapore might not be crime free - At least you can walk the streets without your head being on a swivel.
As you can see from the chart - It also has one of the lowest crime rates in the world
I know you are an avid reader - If you have not already done so. Read Soldier I, and ask '' Pete '' if he would volunteer for another 6 lashes ( HK, late 70's )