Kuva mu 2001, ibyatangajwe mu bushakashatsi bw'imibereho y'ingo n'ubundi, bigaraza ko buri gihe habagaho igabanuka ry'ubukene, ubushakashatsi bwa kane bwo mu kwezi kwa munani 2015 buvuga ko imibare y'ababa mu bukene yavuye kuri 44,9% by'abaturage ikagera kuri 39,1% mu 2015.
