
Harm Reduction International breaks down (pdf), by nation, executions for drug offenses:
[E]ven as the number of states imposing the death penalty for all crimes has decreased to historically unprecedented levels, the number that prescribe the death penalty for drugs has risen. Moreover, a review of state documents, such as those provided for the UN Universal Periodic Review, reveals that governments frequently defend their capital punishment policy by claiming it is reserved primarily for drug offenders. Very often it is argued to be a deterrent measure, yet this would seem to assume that the majority of those caught are cartel bosses in charge of large syndicates. Such an assumption collapses under closer scrutiny. A large proportion, if not an outright majority, are low level couriers, vulnerable to exploitation, and/or foreign nationals.
(Hat tip: Drug WarRant)