| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 25779 |
21%
|
| 1 | <2 years | 41991 |
34.2%
|
| 2 | 2 years | 31119 |
25.4%
|
| 3 | 3 years | 12781 |
10.4%
|
| 4 | 4+ years | 10935 |
8.9%
|