United States prison rate has quadrupled since 1960s
Source: The Brookings Institution’s Hamilton Project.
*Rates are from 2013 for all countries with the exception of Greece, Israel, the Netherlands, Sweden, Switzerland and the United States, which are from 2012; and Canada, which is from 2011–12. The rate for Britain is a weighted average of England and Wales, Northern Ireland and Scotland.
The New York Times says that despite a recent dip, the incarceration rate in the United States has almost quadrupled since the 1960s. The US now has far more people in prison as a share of its population than any other developed country and partly reflects the failed 'War on Drugs' which has criminalised a generation of young men.