| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no prior child | 4271 |
8.8%
|
| 1 | 13444 |
27.6%
|
|
| 2 | 17632 |
36.2%
|
|
| 3 | 11431 |
23.5%
|
|
| 4 | 1830 |
3.8%
|
|
| 5 | 129 |
0.3%
|
|
| 6 | 8 |
0%
|