| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 232 |
38.4%
|
| 1 | 1 year | 63 |
10.4%
|
| 2 | 2 years | 175 |
29%
|
| 3 | 3 years | 51 |
8.4%
|
| 4 | 4 years | 27 |
4.5%
|
| 5 | 5 years | 11 |
1.8%
|
| 6 | 6+ years | 5 |
0.8%
|
| 7 | Non-numeric | 9 |
1.5%
|
| 8 | Don't know | 31 |
5.1%
|