| Value | Category | Cases | |
|---|---|---|---|
| 0 | First birth | 5399 |
38.4%
|
| 1 | <2 years | 2210 |
15.7%
|
| 2 | 2 years | 2240 |
15.9%
|
| 3 | 3 years | 1476 |
10.5%
|
| 4 | 4+ years | 2733 |
19.4%
|