I don't think banks have anywhere to run to. The perfected the art of thievery so well that there is limited competition in the region.
Argentina----------------28.75
Malawi-------------------27.00
Ghana-------------------26.00
Gambia------------------23.00
Venezuela----------------21.54
Haiti --------------------20.00
Iran----------------------20.00
Belarus------------------18.00
Mozambique-------------17.25
Angola-------------------16.00
Ukraine-------------------15.50
Zambia-------------------15.50
Afghanistan--------------15.00
Mongolia------------------15.00
Yemen--------------------15.00
Brazil----------------------14.25
Nigeria---------------------14.00
Uganda---------------------14.00
Liberia----------------------13.55
Kazakhstan----------------13.00
Djibouti--------------------12.70
Guinea---------------------12.50
Suriname------------------12.50
Sudan---------------------12.40
Seychelles-----------------12.28
Tanzania-------------------12.00
Egypt----------------------11.75
Zimbabwe-----------------11.44
Tajikistan -----------------11.00
Kenya----------------------10.50
http://www.tradingeconomics.com/country-list/interest-rate