| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 438 |
22.3%
|
| 1 | 1 year | 180 |
9.1%
|
| 2 | 2 years | 354 |
18%
|
| 3 | 3 years | 467 |
23.7%
|
| 4 | 4 years | 232 |
11.8%
|
| 5 | 5 years | 84 |
4.3%
|
| 6 | 6+ years | 41 |
2.1%
|
| 7 | non-numeric | 8 |
0.4%
|
| 8 | don't know | 164 |
8.3%
|
| Sysmiss | 372 |