66% tiririt-nsen tella ɣef usentel n udlis, d aya i ten-yettaǧǧan fernen-d tawsit ɣef tayeḍ. Ma yella 30% n yineɣmasen tnadin ayen yellan d amaynut d wayen i ḥemlen iwakken ad t-id-seknen, gran-d 4% ur d-rrin ara ɣef usteqsi-agi.