The United States has the highest documented incarceration rate and largest prison population in the world. As of 2020, the Prison Policy Initiative reported that there were some  people incarcerated. According to the Federal Bureau of Prisons, the majority of inmates held in federal prisons are convicted of drug offenses. The imprisonment rate for all prisoners sentenced to more than a year in state or federal facilities is 478 per 100,000 in 2013. About 9% of prisoners are held in privatized prisons, a practice beginning in the 1980s and a subject of contention.