[USA] Public Safety, Public Spending: Forecasting America’s Prison Population 2007-2011 / Public Safety Performance Project ( Pew Charitable Trust), February 2007
PDF - http://12.130.62.149/pdfs/PCT_CorrectionsReport_3-1.pdf
"This report is the first known attempt to determine the growth of the nation’s state and federal prison systems as a whole. It shows that America’s prison population will add more than 192,000 prisoners by 2011, resulting in billions of dollars in construction and annual operations costs."