| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 17741 |
30.4%
|
| 1 | <2 years | 19970 |
34.2%
|
| 2 | 2 years | 3600 |
6.2%
|
| 3 | 3 years | 3036 |
5.2%
|
| 4 | 4+ years | 14043 |
24.1%
|