| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 9271 |
25.1%
|
| 1 | <2 years | 5819 |
15.7%
|
| 2 | 2 years | 11651 |
31.5%
|
| 3 | 3 years | 5563 |
15%
|
| 4 | 4+ years | 4705 |
12.7%
|