Just to be exact, wikipedia is not the "source". Click on the [7] and you'll get the source: Paige M. Harrison and Allen J. Beck, Ph.D. (November 2006). "Prison

Just to be exact, wikipedia is not the "source". Click on the [7] and you'll get the source: Paige M. Harrison and Allen J. Beck, Ph.D. (November 2006). "Prisoners in 2005" (PDF). U.S. Department of Justice, Office of Justice Programs, Bureau of Justice Statistics. pp. 13.