| Value | Category | Cases | |
|---|---|---|---|
| 0 | NOT GIVEN | 1910 |
30.5%
|
| 2016 | 5 |
0.1%
|
|
| 2017 | 86 |
1.4%
|
|
| 2018 | 490 |
7.8%
|
|
| 4444 | MARKED ON CARD | 23 |
0.4%
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 3754 |
59.9%
|