| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | less than one year | 16 |
13.7%
|
| 1 | 18 |
15.4%
|
|
| 2 | 23 |
19.7%
|
|
| 3 | 14 |
12%
|
|
| 4 | 8 |
6.8%
|
|
| 5 | 2 |
1.7%
|
|
| 6 | 5 |
4.3%
|
|
| 7 | 3 |
2.6%
|
|
| 8 | 7 |
6%
|
|
| 10 | 7 |
6%
|
|
| 11 | 2 |
1.7%
|
|
| 18 | 2 |
1.7%
|
|
| 98 | don't know | 10 |
8.5%
|
| Sysmiss | 39676 |