Contributor Since 2008
Ghana ... also imposing currency controls b/c its currency plummeting ... a popular solution it seems ...Argentina, Venezuela, partially in Brazil, Ukraine (on the remittances requires conversion to UAH), Turkey,, etc etc
http://www.bloomberg.com/news/2014-02-06/ghana-raises-benchmark-interest-rate-to-18-to-bolster-currency.html
Ghana Lifts Key Rate to 18% Day After Curbing Currency Trade