| Value | Category | Cases | |
|---|---|---|---|
| 0 | no prior child | 3646 |
11.8%
|
| 1 | 9265 |
30.1%
|
|
| 2 | 9761 |
31.7%
|
|
| 3 | 6583 |
21.4%
|
|
| 4 | 1425 |
4.6%
|
|
| 5 | 129 |
0.4%
|
|
| 6 | 11 |
0%
|