| Value | Category | Cases | |
|---|---|---|---|
| 0 | No prior child | 5007 |
10.2%
|
| 1 | 10803 |
22%
|
|
| 2 | 13972 |
28.4%
|
|
| 3 | 14782 |
30%
|
|
| 4 | 4198 |
8.5%
|
|
| 5 | 402 |
0.8%
|
|
| 6 | 43 |
0.1%
|