You’ve most likely seen the numbers on US prisons that have been making the rounds. More than one in every hundred adults in the United States is in jail or prison, amounting to more than 2.3 million Americans behind bars. This record rate of incarceration in the “land of the free” far exceeds that of any other country, both numerically and as a percentage of the overall population. State governments shell out an average of $50 billion a year on corrections, while the feds pick up the bill for another $5 billion, according to a study by the nonpartisan Pew Center On The States that included data from federal Bureau of Justice Statistics and Bureau of Prisons.