New prison population data on the World Prison Brief

Information on prison population levels prior to 1980 has been added to the World Prison Brief. Such figures are shown for 66 countries; for 21 of these the data goes back to 1950. 

Readers who have access to additional information on pre-1980 levels, including such information for additional countries, are asked to contact us so that we can make available a more comprehensive record of such levels.