| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 271 |
15.5%
|
|
| 2016 | 630 |
36.1%
|
|
| 2017 | 604 |
34.6%
|
|
| 2018 | 239 |
13.7%
|
|
| 4444 | Marked on card | 0 |
0%
|
| 6666 | Mother reported | 0 |
0%
|
| 9999 | No response | 1 |
0.1%
|
| Sysmiss | 2909 |