| Value | Category | Cases | |
|---|---|---|---|
| 0 | NOT GIVEN | 1367 |
21.8%
|
| 2016 | 34 |
0.5%
|
|
| 2017 | 624 |
10%
|
|
| 2018 | 472 |
7.5%
|
|
| 4444 | MARKED ON CARD | 18 |
0.3%
|
| Sysmiss | 3754 |
59.9%
|