| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 11762 |
41.2%
|
| 1 | 1 year | 1753 |
6.1%
|
| 2 | 2 years | 3277 |
11.5%
|
| 3 | 3 years | 4293 |
15%
|
| 4 | 4 years | 2601 |
9.1%
|
| 5 | 5 years | 1892 |
6.6%
|
| 6 | 6+ years | 380 |
1.3%
|
| 7 | non-numeric | 855 |
3%
|
| 8 | don't know | 1727 |
6.1%
|
| Sysmiss | 23052 |