| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 5833 |
76%
|
| 2555 | 6 |
0.1%
|
|
| 2556 | 19 |
0.2%
|
|
| 2557 | 39 |
0.5%
|
|
| 2558 | 729 |
9.5%
|
|
| 2559 | 27 |
0.4%
|
|
| 4444 | Marked on card | 28 |
0.4%
|
| Sysmiss | 993 |
12.9%
|