 Ma yella igerdan neɣ lejdud ṭuqten , azal n nafaqa -nsen ad tettili 40% , ma d tin n wergaz 50%  Ma yella ulac argaz , at wezref niḍen ad ferqen 90% n wazal n nafaqa cujus , ay-agi di tilist iṣerṣen i yal bab n wezref :  45% n nafaqa ma yella bab n wezref d agrud .