| Value | Category | Cases | |
|---|---|---|---|
| 0 | No prior child | 2610 |
11.6%
|
| 1 | 7131 |
31.6%
|
|
| 2 | 5318 |
23.6%
|
|
| 3 | 4990 |
22.1%
|
|
| 4 | 2171 |
9.6%
|
|
| 5 | 265 |
1.2%
|
|
| 6 | 32 |
0.1%
|
|
| 7 | 17 |
0.1%
|