| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no prior child | 7046 |
41.2%
|
| 1 | 2524 |
14.8%
|
|
| 2 | 3395 |
19.9%
|
|
| 3 | 3457 |
20.2%
|
|
| 4 | 621 |
3.6%
|
|
| 5 | 37 |
0.2%
|
|
| 6 | 7 |
0%
|