| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | less than one year | 2 |
1.2%
|
| 1 | 18 |
11.2%
|
|
| 2 | 14 |
8.7%
|
|
| 3 | 88 |
54.7%
|
|
| 4 | 19 |
11.8%
|
|
| 5 | 20 |
12.4%
|