[USA] Inmate Growth Jumped in 2006 / Guardian, 27 June 2007
http://www.guardian.co.uk/worldlatest/story/0,,-6740989,00.html
"Prisons and jails added more than 42,000 inmates last year, the largest increase since 2000."
Prison and Jail Inmates at Midyear 2006 / US. Department of Justice. Bureau of Justice Statistics, 27 June 2007
http://www.ojp.usdoj.gov/bjs/abstract/pjim06.htm