 Kuva mu 2001, ibyatangajwe mu bushakashatsi bwimibereho yingo nubundi, bigaraza ko buri gihe habagaho igabanuka ryubukene, ubushakashatsi bwa kane bwo mu kwezi kwa munani 2015 buvuga ko imibare yababa mu bukene yavuye kuri 44,9 byabaturage ikagera kuri 39,1 mu 2015. 