Number of People in the US Serving Time in Private Prisons for Federal Offenses

"• Federal prisoners held in private prison decreased by 5,100 prisoners, which accounted for 93% of the total decrease in the number of prisoners held in private prisons at yearend 2015.
??"• Private prison facilities, including nonsecure community corrections centers and home confinement, housed almost 18% of the federal prison population on December 31, 2015."

Source: 

E. Ann Carson, PhD, and Elizabeth Anderson. Prisoners In 2015. Washington, DC: US Dept of Justice Bureau of Justice Statistics, Dec. 2016, NCJ250229, p. 16.
https://www.bjs.gov/index.cfm...
https://www.bjs.gov/content/pu...