The number of executions around the world fell by about a third in 2018, reaching the lowest level in at least a decade as several countries scaled back or abolished the death penalty, Amnesty International said in a report released on Wednesday.

The global decline was driven largely by Iran, where executions were halved because of legal reforms that included eliminating the death penalty for a number of drug-related crimes.

“The trend points toward a world ridding itself of the death penalty,” said Oluwatosin Popoola, Amnesty International’s adviser on the death penalty.