"Since 1995 the total number of male prisoners has grown 34%; the number of female prisoners, 57%. At yearend 2005, 1 in every 1,538 women and 1 in every 108 men were incarcerated in a State or Federal prison."

Source

Harrison, Paige M. & Allen J. Beck, PhD, Bureau of Justice Statistics, Prisoners in 2005 (Washington DC: US Department of Justice, Nov. 2006), p. 4.
http://www.bjs.gov/content/pu…