| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 9757 |
28.2%
|
| 1 | <2 years | 4767 |
13.8%
|
| 2 | 2 years | 7572 |
21.9%
|
| 3 | 3 years | 5414 |
15.6%
|
| 4 | 4+ years | 7085 |
20.5%
|