" The countries with the highest female prison population rate – that is, the number of female prisoners per 100,000 of the national population – are the USA (64), Thailand (47), El Salvador (42), Turkmenistan (38), Brunei Darussalam (36), MacauChina (32), Belarus (30), Uruguay (29), Rwanda (28) and Russia (27).*
" There are also considerable variations between continents in the female prison population rate. Africa has the lowest rate, at 3 per 100,000 of the national population. In Asia, the rate is 7 (9 excluding China and India); in Europe, 10 (7 excluding Russia); in Oceania 10; and in the Americas, 30 (14 excluding the USA.)."
Fair, Helen, and Walmsley, Roy, World Female Imprisonment List (Fifth Edition), London, England: International Centre for Prison Studies, School of Law at Birkbeck, University of London.