| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no prior child | 7776 |
44%
|
| 1 | 3039 |
17.2%
|
|
| 2 | 4099 |
23.2%
|
|
| 3 | 2411 |
13.7%
|
|
| 4 | 315 |
1.8%
|
|
| 5 | 18 |
0.1%
|
|
| 6 | 1 |
0%
|