| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 0 |
0%
|
| 2013 | 1 |
0%
|
|
| 2014 | 105 |
4.5%
|
|
| 2015 | 973 |
41.5%
|
|
| 2016 | 1235 |
52.7%
|
|
| 2017 | 3 |
0.1%
|
|
| 4444 | Marked on card | 0 |
0%
|
| 6666 | Mother reported | 0 |
0%
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 16 |
0.7%
|
| 9999 | Missing | 10 |
0.4%
|
| Sysmiss | 26992 |