| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 9128 |
28.8%
|
| 1 | <2 years | 4264 |
13.5%
|
| 2 | 2 years | 6980 |
22.1%
|
| 3 | 3 years | 4738 |
15%
|
| 4 | 4+ years | 6530 |
20.6%
|