| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no prior child | 3877 |
31.4%
|
| 2 | 3626 |
29.4%
|
|
| 3 | 4053 |
32.8%
|
|
| 4 | 729 |
5.9%
|
|
| 5 | 58 |
0.5%
|