Three people have been executed since 2004, and there were no executions for eight years before that.
In Pakistan, for example, 400 people have been executed since December 2014, when the Pakistani government began a brutal execution campaign waged under the pretext of fighting terrorists.
Five foreigners have been executed since 1998, all for drug crimes, but there have been no executions in the country since 2008, said the institute said.
Nationally, 612 people have been executed since the Supreme Court reinstated capital punishment in 1976.
About 1,300 people have been executed since Gregg, with Texas putting its 503rd prisoner to death just weeks ago.
Three projects have been executed since 2008, and the latest proposal would sweep up three schools at once.
In all, around 70 officials have been executed since Kim became leader, Yonhap quoted the NIS as saying.
While 694 convicted murderers sit on the state's death row, only 13 have been executed since the Supreme Court allowed for reinstatement of the death penalty in 1976.
Pennsylvania ranks high among states that impose death sentences and low among those that carry them out: 208 men and women are on death row, but no one has been executed since 1999; only three people have been executed since the penalty was reinstated in 1976.
Through the year, deep ethical and procedural problems with the death sentence in the US have been displayed by the cases of the 36 men (they have all been men) who have been executed since Troy Davis.
