| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 20 |
18.7%
|
| 1 | 14 |
13.1%
|
|
| 2 | 15 |
14%
|
|
| 3 | 13 |
12.1%
|
|
| 4 | 17 |
15.9%
|
|
| 5 | 14 |
13.1%
|
|
| 6 | 12 |
11.2%
|
|
| 8 | don't know | 2 |
1.9%
|
| Sysmiss | 4705 |