| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 364 |
21.2%
|
| 1 | 1 year | 127 |
7.4%
|
| 2 | 2 years | 249 |
14.5%
|
| 3 | 3 years | 460 |
26.8%
|
| 4 | 4 years | 259 |
15.1%
|
| 5 | 5 years | 151 |
8.8%
|
| 6 | 6+ years | 37 |
2.2%
|
| 7 | non-numeric | 7 |
0.4%
|
| 8 | don't know | 64 |
3.7%
|
| Sysmiss | 622 |