| Value | Category | Cases | |
|---|---|---|---|
| 0 | NOT GIVEN | 0 |
0%
|
| 2015 | 122 |
6.5%
|
|
| 2016 | 626 |
33.5%
|
|
| 2017 | 585 |
31.3%
|
|
| 2018 | 533 |
28.5%
|
|
| 4444 | MARKED ON CARD | 0 |
0%
|
| 9999 | NO RESPONSE | 2 |
0.1%
|
| Sysmiss | 1684 |