- Per capita: Data for 2003. Number of prisoners held per 100,000 population.
- Pre-trial detainees: The percentage of the prison population that is being held pre-trial / on remand. Data for 2003.
- Share of prison capacity filled: The percentage of the offical prison capacity filled. This is obtained by comparing the number of prisoners in a nation to the offical capacity of the nation's prison system. Data for 2003.