| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 99 |
9.7%
|
| 1 | 162 |
15.9%
|
|
| 2 | 159 |
15.6%
|
|
| 3 | 203 |
19.9%
|
|
| 4 | 171 |
16.7%
|
|
| 5 | 86 |
8.4%
|
|
| 6 | 140 |
13.7%
|
|
| 8 | don't know | 2 |
0.2%
|
| Sysmiss | 3790 |