| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 743 |
18.9%
|
| 1 | 1 year | 328 |
8.4%
|
| 2 | 2 years | 627 |
16%
|
| 3 | 3 years | 916 |
23.3%
|
| 4 | 4 years | 506 |
12.9%
|
| 5 | 5 years | 266 |
6.8%
|
| 6 | 6+ years | 77 |
2%
|
| 7 | non-numeric | 232 |
5.9%
|
| 8 | don't know | 228 |
5.8%
|
| Sysmiss | 2522 |