| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 471 |
11.5%
|
| 1 | 1 year | 450 |
11%
|
| 2 | 2 years | 919 |
22.4%
|
| 3 | 3 years | 1260 |
30.7%
|
| 4 | 4 years | 531 |
12.9%
|
| 5 | 5 years | 281 |
6.9%
|
| 6 | 6+ years | 107 |
2.6%
|
| 7 | non-numeric | 1 |
0%
|
| 8 | don't know | 81 |
2%
|
| Sysmiss | 1727 |