2-4 سنوات
28%
17%
13%
21%
29%
27%
3%
17%
25%
17%
34%
19%
41%
13%
17%
17%
17%
13%
17%
17%
17%
17%
31%
40%
28%
17%
36%
13%
30%
29%
17%
42%