| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 99 |
13.5%
|
| 1 | 147 |
20%
|
|
| 2 | 118 |
16.1%
|
|
| 3 | 118 |
16.1%
|
|
| 4 | 100 |
13.6%
|
|
| 5 | 72 |
9.8%
|
|
| 6 | 79 |
10.7%
|
|
| 8 | don't know | 2 |
0.3%
|
| Sysmiss | 4077 |