A. 613.
Since January 2002 when the detention facility opened, 779 individuals have been held captive there. Nine detainees have died at Guantánamo, the most recent was in September when Adnan Latif, a Yemeni cleared for release, apparently took his own life.
An estimated 532 detainees were released during the Bush administration.
The Obama administration has released 72 detainees.