| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 541 |
41.3%
|
| 1 | <2 years | 139 |
10.6%
|
| 2 | 2 years | 171 |
13.1%
|
| 3 | 3 years | 98 |
7.5%
|
| 4 | 4+ years | 360 |
27.5%
|