Statistics from the U.S. Department of Justice show that, as of 2013, there were 133,000 state and federal prisoners housed in privately owned prisons in the U.S., constituting 8.4% of the overall U.S. prison population.[23] Broken down to prison type, 19.1% of the federal prison population in the United States is housed in private prisons and 6.8% of the U.S. state prison population is housed in private prisons.[23] While 2013 represents a slight decline in private prison population over 2012, the overall trend over the past decade has been a slow increase.[23] Companies operating such facilities include the Corrections Corporation of America (CCA), the GEO Group, Inc. (formerly known as Wackenhut Securities), Management and Training Corporation (MTC), and Community Education Centers. In the past two decades CCA has seen its profits increase by more than 500 percent.[24] The prison industry as a whole took in over $5 billion in revenue in 2011.[25]