| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no prior child | 4427 |
11.1%
|
| 1 | 7682 |
19.3%
|
|
| 2 | 10152 |
25.5%
|
|
| 3 | 11182 |
28.1%
|
|
| 4 | 5478 |
13.8%
|
|
| 5 | 759 |
1.9%
|
|
| 6 | 84 |
0.2%
|
|
| 7 | 29 |
0.1%
|