Earlier quoted context omitted.
China has a big ketamine problem now, with whole villages producing the drug and many addicts. Singapore has a middle-class "ice" (meth) problem. In addition, there was a recent study showing that harsh penalties and rates of drug use are not correlated. http://www.theguardian.com/society/2014/oct/30/punitive-drug... If you think that particular countries have unusually low rates of use, then you may be just wrong be…
China's drugs usage death rate is very low compared to Western countries. http://www.worldlifeexpectancy.com/cause-of-death/drug-use/b...
You should also remember that by far the most widely used illegal drug is cannabis (93% in the UK), and it's almost impossible to die from cannabis. About the only way I can think of is if a block of it drops on you from a smuggler's aircraft. So just looking at deaths from drug use isn't so interesting. There are other ways that drugs are both productive and enjoyable, and can be damaging.