Ho ya ka dipalopalo, Chaena e hlahisitse ditone tse ka bang dimilione tse 5.52 tsa diphaephe tsa tshepe tse welditsweng ka Phato, tse hodileng ka 4.2% ha ho bapiswa le kgwedi e tshwanang selemong se fetileng.

Likhoeling tse robeli tsa pele tsa selemo sena, tlhahiso ea liphaephe tsa tšepe tse tjhisitsoeng tsa Chaena e fihlile ho lithane tse ka bang limilione tse 37.93, e leng keketseho ea selemo le selemo ea 0.9%.